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2.0.6 / 2020-02-24
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==================
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		||||
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  * deps: ipaddr.js@1.9.1
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2.0.5 / 2019-04-16
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==================
 | 
			
		||||
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		||||
  * deps: ipaddr.js@1.9.0
 | 
			
		||||
 | 
			
		||||
2.0.4 / 2018-07-26
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
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  * deps: ipaddr.js@1.8.0
 | 
			
		||||
 | 
			
		||||
2.0.3 / 2018-02-19
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * deps: ipaddr.js@1.6.0
 | 
			
		||||
 | 
			
		||||
2.0.2 / 2017-09-24
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * deps: forwarded@~0.1.2
 | 
			
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    - perf: improve header parsing
 | 
			
		||||
    - perf: reduce overhead when no `X-Forwarded-For` header
 | 
			
		||||
 | 
			
		||||
2.0.1 / 2017-09-10
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * deps: forwarded@~0.1.1
 | 
			
		||||
    - Fix trimming leading / trailing OWS
 | 
			
		||||
    - perf: hoist regular expression
 | 
			
		||||
  * deps: ipaddr.js@1.5.2
 | 
			
		||||
 | 
			
		||||
2.0.0 / 2017-08-08
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * Drop support for Node.js below 0.10
 | 
			
		||||
 | 
			
		||||
1.1.5 / 2017-07-25
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * Fix array argument being altered
 | 
			
		||||
  * deps: ipaddr.js@1.4.0
 | 
			
		||||
 | 
			
		||||
1.1.4 / 2017-03-24
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * deps: ipaddr.js@1.3.0
 | 
			
		||||
 | 
			
		||||
1.1.3 / 2017-01-14
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * deps: ipaddr.js@1.2.0
 | 
			
		||||
 | 
			
		||||
1.1.2 / 2016-05-29
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * deps: ipaddr.js@1.1.1
 | 
			
		||||
    - Fix IPv6-mapped IPv4 validation edge cases
 | 
			
		||||
 | 
			
		||||
1.1.1 / 2016-05-03
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * Fix regression matching mixed versions against multiple subnets
 | 
			
		||||
 | 
			
		||||
1.1.0 / 2016-05-01
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * Fix accepting various invalid netmasks
 | 
			
		||||
    - IPv4 netmasks must be contingous
 | 
			
		||||
    - IPv6 addresses cannot be used as a netmask
 | 
			
		||||
  * deps: ipaddr.js@1.1.0
 | 
			
		||||
 | 
			
		||||
1.0.10 / 2015-12-09
 | 
			
		||||
===================
 | 
			
		||||
 | 
			
		||||
  * deps: ipaddr.js@1.0.5
 | 
			
		||||
    - Fix regression in `isValid` with non-string arguments
 | 
			
		||||
 | 
			
		||||
1.0.9 / 2015-12-01
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * deps: ipaddr.js@1.0.4
 | 
			
		||||
    - Fix accepting some invalid IPv6 addresses
 | 
			
		||||
    - Reject CIDRs with negative or overlong masks
 | 
			
		||||
  * perf: enable strict mode
 | 
			
		||||
 | 
			
		||||
1.0.8 / 2015-05-10
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * deps: ipaddr.js@1.0.1
 | 
			
		||||
 | 
			
		||||
1.0.7 / 2015-03-16
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * deps: ipaddr.js@0.1.9
 | 
			
		||||
    - Fix OOM on certain inputs to `isValid`
 | 
			
		||||
 | 
			
		||||
1.0.6 / 2015-02-01
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * deps: ipaddr.js@0.1.8
 | 
			
		||||
 | 
			
		||||
1.0.5 / 2015-01-08
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * deps: ipaddr.js@0.1.6
 | 
			
		||||
 | 
			
		||||
1.0.4 / 2014-11-23
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * deps: ipaddr.js@0.1.5
 | 
			
		||||
    - Fix edge cases with `isValid`
 | 
			
		||||
 | 
			
		||||
1.0.3 / 2014-09-21
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * Use `forwarded` npm module
 | 
			
		||||
 | 
			
		||||
1.0.2 / 2014-09-18
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * Fix a global leak when multiple subnets are trusted
 | 
			
		||||
  * Support Node.js 0.6
 | 
			
		||||
  * deps: ipaddr.js@0.1.3
 | 
			
		||||
 | 
			
		||||
1.0.1 / 2014-06-03
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * Fix links in npm package
 | 
			
		||||
 | 
			
		||||
1.0.0 / 2014-05-08
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * Add `trust` argument to determine proxy trust on
 | 
			
		||||
    * Accepts custom function
 | 
			
		||||
    * Accepts IPv4/IPv6 address(es)
 | 
			
		||||
    * Accepts subnets
 | 
			
		||||
    * Accepts pre-defined names
 | 
			
		||||
  * Add optional `trust` argument to `proxyaddr.all` to
 | 
			
		||||
    stop at first untrusted
 | 
			
		||||
  * Add `proxyaddr.compile` to pre-compile `trust` function
 | 
			
		||||
    to make subsequent calls faster
 | 
			
		||||
 | 
			
		||||
0.0.1 / 2014-05-04
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * Fix bad npm publish
 | 
			
		||||
 | 
			
		||||
0.0.0 / 2014-05-04
 | 
			
		||||
==================
 | 
			
		||||
 | 
			
		||||
  * Initial release
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(The MIT License)
 | 
			
		||||
 | 
			
		||||
Copyright (c) 2014-2016 Douglas Christopher Wilson
 | 
			
		||||
 | 
			
		||||
Permission is hereby granted, free of charge, to any person obtaining
 | 
			
		||||
a copy of this software and associated documentation files (the
 | 
			
		||||
'Software'), to deal in the Software without restriction, including
 | 
			
		||||
without limitation the rights to use, copy, modify, merge, publish,
 | 
			
		||||
distribute, sublicense, and/or sell copies of the Software, and to
 | 
			
		||||
permit persons to whom the Software is furnished to do so, subject to
 | 
			
		||||
the following conditions:
 | 
			
		||||
 | 
			
		||||
The above copyright notice and this permission notice shall be
 | 
			
		||||
included in all copies or substantial portions of the Software.
 | 
			
		||||
 | 
			
		||||
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
 | 
			
		||||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 | 
			
		||||
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 | 
			
		||||
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 | 
			
		||||
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 | 
			
		||||
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 | 
			
		||||
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 | 
			
		||||
							
								
								
									
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# proxy-addr
 | 
			
		||||
 | 
			
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[![NPM Version][npm-version-image]][npm-url]
 | 
			
		||||
[![NPM Downloads][npm-downloads-image]][npm-url]
 | 
			
		||||
[![Node.js Version][node-image]][node-url]
 | 
			
		||||
[![Build Status][travis-image]][travis-url]
 | 
			
		||||
[![Test Coverage][coveralls-image]][coveralls-url]
 | 
			
		||||
 | 
			
		||||
Determine address of proxied request
 | 
			
		||||
 | 
			
		||||
## Install
 | 
			
		||||
 | 
			
		||||
This is a [Node.js](https://nodejs.org/en/) module available through the
 | 
			
		||||
[npm registry](https://www.npmjs.com/). Installation is done using the
 | 
			
		||||
[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
 | 
			
		||||
 | 
			
		||||
```sh
 | 
			
		||||
$ npm install proxy-addr
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
## API
 | 
			
		||||
 | 
			
		||||
<!-- eslint-disable no-unused-vars -->
 | 
			
		||||
 | 
			
		||||
```js
 | 
			
		||||
var proxyaddr = require('proxy-addr')
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
### proxyaddr(req, trust)
 | 
			
		||||
 | 
			
		||||
Return the address of the request, using the given `trust` parameter.
 | 
			
		||||
 | 
			
		||||
The `trust` argument is a function that returns `true` if you trust
 | 
			
		||||
the address, `false` if you don't. The closest untrusted address is
 | 
			
		||||
returned.
 | 
			
		||||
 | 
			
		||||
<!-- eslint-disable no-undef -->
 | 
			
		||||
 | 
			
		||||
```js
 | 
			
		||||
proxyaddr(req, function (addr) { return addr === '127.0.0.1' })
 | 
			
		||||
proxyaddr(req, function (addr, i) { return i < 1 })
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
The `trust` arugment may also be a single IP address string or an
 | 
			
		||||
array of trusted addresses, as plain IP addresses, CIDR-formatted
 | 
			
		||||
strings, or IP/netmask strings.
 | 
			
		||||
 | 
			
		||||
<!-- eslint-disable no-undef -->
 | 
			
		||||
 | 
			
		||||
```js
 | 
			
		||||
proxyaddr(req, '127.0.0.1')
 | 
			
		||||
proxyaddr(req, ['127.0.0.0/8', '10.0.0.0/8'])
 | 
			
		||||
proxyaddr(req, ['127.0.0.0/255.0.0.0', '192.168.0.0/255.255.0.0'])
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
This module also supports IPv6. Your IPv6 addresses will be normalized
 | 
			
		||||
automatically (i.e. `fe80::00ed:1` equals `fe80:0:0:0:0:0:ed:1`).
 | 
			
		||||
 | 
			
		||||
<!-- eslint-disable no-undef -->
 | 
			
		||||
 | 
			
		||||
```js
 | 
			
		||||
proxyaddr(req, '::1')
 | 
			
		||||
proxyaddr(req, ['::1/128', 'fe80::/10'])
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
This module will automatically work with IPv4-mapped IPv6 addresses
 | 
			
		||||
as well to support node.js in IPv6-only mode. This means that you do
 | 
			
		||||
not have to specify both `::ffff:a00:1` and `10.0.0.1`.
 | 
			
		||||
 | 
			
		||||
As a convenience, this module also takes certain pre-defined names
 | 
			
		||||
in addition to IP addresses, which expand into IP addresses:
 | 
			
		||||
 | 
			
		||||
<!-- eslint-disable no-undef -->
 | 
			
		||||
 | 
			
		||||
```js
 | 
			
		||||
proxyaddr(req, 'loopback')
 | 
			
		||||
proxyaddr(req, ['loopback', 'fc00:ac:1ab5:fff::1/64'])
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
  * `loopback`: IPv4 and IPv6 loopback addresses (like `::1` and
 | 
			
		||||
    `127.0.0.1`).
 | 
			
		||||
  * `linklocal`: IPv4 and IPv6 link-local addresses (like
 | 
			
		||||
    `fe80::1:1:1:1` and `169.254.0.1`).
 | 
			
		||||
  * `uniquelocal`: IPv4 private addresses and IPv6 unique-local
 | 
			
		||||
    addresses (like `fc00:ac:1ab5:fff::1` and `192.168.0.1`).
 | 
			
		||||
 | 
			
		||||
When `trust` is specified as a function, it will be called for each
 | 
			
		||||
address to determine if it is a trusted address. The function is
 | 
			
		||||
given two arguments: `addr` and `i`, where `addr` is a string of
 | 
			
		||||
the address to check and `i` is a number that represents the distance
 | 
			
		||||
from the socket address.
 | 
			
		||||
 | 
			
		||||
### proxyaddr.all(req, [trust])
 | 
			
		||||
 | 
			
		||||
Return all the addresses of the request, optionally stopping at the
 | 
			
		||||
first untrusted. This array is ordered from closest to furthest
 | 
			
		||||
(i.e. `arr[0] === req.connection.remoteAddress`).
 | 
			
		||||
 | 
			
		||||
<!-- eslint-disable no-undef -->
 | 
			
		||||
 | 
			
		||||
```js
 | 
			
		||||
proxyaddr.all(req)
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
The optional `trust` argument takes the same arguments as `trust`
 | 
			
		||||
does in `proxyaddr(req, trust)`.
 | 
			
		||||
 | 
			
		||||
<!-- eslint-disable no-undef -->
 | 
			
		||||
 | 
			
		||||
```js
 | 
			
		||||
proxyaddr.all(req, 'loopback')
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
### proxyaddr.compile(val)
 | 
			
		||||
 | 
			
		||||
Compiles argument `val` into a `trust` function. This function takes
 | 
			
		||||
the same arguments as `trust` does in `proxyaddr(req, trust)` and
 | 
			
		||||
returns a function suitable for `proxyaddr(req, trust)`.
 | 
			
		||||
 | 
			
		||||
<!-- eslint-disable no-undef, no-unused-vars -->
 | 
			
		||||
 | 
			
		||||
```js
 | 
			
		||||
var trust = proxyaddr.compile('loopback')
 | 
			
		||||
var addr = proxyaddr(req, trust)
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
This function is meant to be optimized for use against every request.
 | 
			
		||||
It is recommend to compile a trust function up-front for the trusted
 | 
			
		||||
configuration and pass that to `proxyaddr(req, trust)` for each request.
 | 
			
		||||
 | 
			
		||||
## Testing
 | 
			
		||||
 | 
			
		||||
```sh
 | 
			
		||||
$ npm test
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
## Benchmarks
 | 
			
		||||
 | 
			
		||||
```sh
 | 
			
		||||
$ npm run-script bench
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
## License
 | 
			
		||||
 | 
			
		||||
[MIT](LICENSE)
 | 
			
		||||
 | 
			
		||||
[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/proxy-addr/master
 | 
			
		||||
[coveralls-url]: https://coveralls.io/r/jshttp/proxy-addr?branch=master
 | 
			
		||||
[node-image]: https://badgen.net/npm/node/proxy-addr
 | 
			
		||||
[node-url]: https://nodejs.org/en/download
 | 
			
		||||
[npm-downloads-image]: https://badgen.net/npm/dm/proxy-addr
 | 
			
		||||
[npm-url]: https://npmjs.org/package/proxy-addr
 | 
			
		||||
[npm-version-image]: https://badgen.net/npm/v/proxy-addr
 | 
			
		||||
[travis-image]: https://badgen.net/travis/jshttp/proxy-addr/master
 | 
			
		||||
[travis-url]: https://travis-ci.org/jshttp/proxy-addr
 | 
			
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/*!
 | 
			
		||||
 * proxy-addr
 | 
			
		||||
 * Copyright(c) 2014-2016 Douglas Christopher Wilson
 | 
			
		||||
 * MIT Licensed
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
'use strict'
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * Module exports.
 | 
			
		||||
 * @public
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
module.exports = proxyaddr
 | 
			
		||||
module.exports.all = alladdrs
 | 
			
		||||
module.exports.compile = compile
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * Module dependencies.
 | 
			
		||||
 * @private
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
var forwarded = require('forwarded')
 | 
			
		||||
var ipaddr = require('ipaddr.js')
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * Variables.
 | 
			
		||||
 * @private
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
var DIGIT_REGEXP = /^[0-9]+$/
 | 
			
		||||
var isip = ipaddr.isValid
 | 
			
		||||
var parseip = ipaddr.parse
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * Pre-defined IP ranges.
 | 
			
		||||
 * @private
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
var IP_RANGES = {
 | 
			
		||||
  linklocal: ['169.254.0.0/16', 'fe80::/10'],
 | 
			
		||||
  loopback: ['127.0.0.1/8', '::1/128'],
 | 
			
		||||
  uniquelocal: ['10.0.0.0/8', '172.16.0.0/12', '192.168.0.0/16', 'fc00::/7']
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * Get all addresses in the request, optionally stopping
 | 
			
		||||
 * at the first untrusted.
 | 
			
		||||
 *
 | 
			
		||||
 * @param {Object} request
 | 
			
		||||
 * @param {Function|Array|String} [trust]
 | 
			
		||||
 * @public
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
function alladdrs (req, trust) {
 | 
			
		||||
  // get addresses
 | 
			
		||||
  var addrs = forwarded(req)
 | 
			
		||||
 | 
			
		||||
  if (!trust) {
 | 
			
		||||
    // Return all addresses
 | 
			
		||||
    return addrs
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  if (typeof trust !== 'function') {
 | 
			
		||||
    trust = compile(trust)
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  for (var i = 0; i < addrs.length - 1; i++) {
 | 
			
		||||
    if (trust(addrs[i], i)) continue
 | 
			
		||||
 | 
			
		||||
    addrs.length = i + 1
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  return addrs
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * Compile argument into trust function.
 | 
			
		||||
 *
 | 
			
		||||
 * @param {Array|String} val
 | 
			
		||||
 * @private
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
function compile (val) {
 | 
			
		||||
  if (!val) {
 | 
			
		||||
    throw new TypeError('argument is required')
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  var trust
 | 
			
		||||
 | 
			
		||||
  if (typeof val === 'string') {
 | 
			
		||||
    trust = [val]
 | 
			
		||||
  } else if (Array.isArray(val)) {
 | 
			
		||||
    trust = val.slice()
 | 
			
		||||
  } else {
 | 
			
		||||
    throw new TypeError('unsupported trust argument')
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  for (var i = 0; i < trust.length; i++) {
 | 
			
		||||
    val = trust[i]
 | 
			
		||||
 | 
			
		||||
    if (!Object.prototype.hasOwnProperty.call(IP_RANGES, val)) {
 | 
			
		||||
      continue
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    // Splice in pre-defined range
 | 
			
		||||
    val = IP_RANGES[val]
 | 
			
		||||
    trust.splice.apply(trust, [i, 1].concat(val))
 | 
			
		||||
    i += val.length - 1
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  return compileTrust(compileRangeSubnets(trust))
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * Compile `arr` elements into range subnets.
 | 
			
		||||
 *
 | 
			
		||||
 * @param {Array} arr
 | 
			
		||||
 * @private
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
function compileRangeSubnets (arr) {
 | 
			
		||||
  var rangeSubnets = new Array(arr.length)
 | 
			
		||||
 | 
			
		||||
  for (var i = 0; i < arr.length; i++) {
 | 
			
		||||
    rangeSubnets[i] = parseipNotation(arr[i])
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  return rangeSubnets
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * Compile range subnet array into trust function.
 | 
			
		||||
 *
 | 
			
		||||
 * @param {Array} rangeSubnets
 | 
			
		||||
 * @private
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
function compileTrust (rangeSubnets) {
 | 
			
		||||
  // Return optimized function based on length
 | 
			
		||||
  var len = rangeSubnets.length
 | 
			
		||||
  return len === 0
 | 
			
		||||
    ? trustNone
 | 
			
		||||
    : len === 1
 | 
			
		||||
      ? trustSingle(rangeSubnets[0])
 | 
			
		||||
      : trustMulti(rangeSubnets)
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * Parse IP notation string into range subnet.
 | 
			
		||||
 *
 | 
			
		||||
 * @param {String} note
 | 
			
		||||
 * @private
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
function parseipNotation (note) {
 | 
			
		||||
  var pos = note.lastIndexOf('/')
 | 
			
		||||
  var str = pos !== -1
 | 
			
		||||
    ? note.substring(0, pos)
 | 
			
		||||
    : note
 | 
			
		||||
 | 
			
		||||
  if (!isip(str)) {
 | 
			
		||||
    throw new TypeError('invalid IP address: ' + str)
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  var ip = parseip(str)
 | 
			
		||||
 | 
			
		||||
  if (pos === -1 && ip.kind() === 'ipv6' && ip.isIPv4MappedAddress()) {
 | 
			
		||||
    // Store as IPv4
 | 
			
		||||
    ip = ip.toIPv4Address()
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  var max = ip.kind() === 'ipv6'
 | 
			
		||||
    ? 128
 | 
			
		||||
    : 32
 | 
			
		||||
 | 
			
		||||
  var range = pos !== -1
 | 
			
		||||
    ? note.substring(pos + 1, note.length)
 | 
			
		||||
    : null
 | 
			
		||||
 | 
			
		||||
  if (range === null) {
 | 
			
		||||
    range = max
 | 
			
		||||
  } else if (DIGIT_REGEXP.test(range)) {
 | 
			
		||||
    range = parseInt(range, 10)
 | 
			
		||||
  } else if (ip.kind() === 'ipv4' && isip(range)) {
 | 
			
		||||
    range = parseNetmask(range)
 | 
			
		||||
  } else {
 | 
			
		||||
    range = null
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  if (range <= 0 || range > max) {
 | 
			
		||||
    throw new TypeError('invalid range on address: ' + note)
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  return [ip, range]
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * Parse netmask string into CIDR range.
 | 
			
		||||
 *
 | 
			
		||||
 * @param {String} netmask
 | 
			
		||||
 * @private
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
function parseNetmask (netmask) {
 | 
			
		||||
  var ip = parseip(netmask)
 | 
			
		||||
  var kind = ip.kind()
 | 
			
		||||
 | 
			
		||||
  return kind === 'ipv4'
 | 
			
		||||
    ? ip.prefixLengthFromSubnetMask()
 | 
			
		||||
    : null
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * Determine address of proxied request.
 | 
			
		||||
 *
 | 
			
		||||
 * @param {Object} request
 | 
			
		||||
 * @param {Function|Array|String} trust
 | 
			
		||||
 * @public
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
function proxyaddr (req, trust) {
 | 
			
		||||
  if (!req) {
 | 
			
		||||
    throw new TypeError('req argument is required')
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  if (!trust) {
 | 
			
		||||
    throw new TypeError('trust argument is required')
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  var addrs = alladdrs(req, trust)
 | 
			
		||||
  var addr = addrs[addrs.length - 1]
 | 
			
		||||
 | 
			
		||||
  return addr
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * Static trust function to trust nothing.
 | 
			
		||||
 *
 | 
			
		||||
 * @private
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
function trustNone () {
 | 
			
		||||
  return false
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * Compile trust function for multiple subnets.
 | 
			
		||||
 *
 | 
			
		||||
 * @param {Array} subnets
 | 
			
		||||
 * @private
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
function trustMulti (subnets) {
 | 
			
		||||
  return function trust (addr) {
 | 
			
		||||
    if (!isip(addr)) return false
 | 
			
		||||
 | 
			
		||||
    var ip = parseip(addr)
 | 
			
		||||
    var ipconv
 | 
			
		||||
    var kind = ip.kind()
 | 
			
		||||
 | 
			
		||||
    for (var i = 0; i < subnets.length; i++) {
 | 
			
		||||
      var subnet = subnets[i]
 | 
			
		||||
      var subnetip = subnet[0]
 | 
			
		||||
      var subnetkind = subnetip.kind()
 | 
			
		||||
      var subnetrange = subnet[1]
 | 
			
		||||
      var trusted = ip
 | 
			
		||||
 | 
			
		||||
      if (kind !== subnetkind) {
 | 
			
		||||
        if (subnetkind === 'ipv4' && !ip.isIPv4MappedAddress()) {
 | 
			
		||||
          // Incompatible IP addresses
 | 
			
		||||
          continue
 | 
			
		||||
        }
 | 
			
		||||
 | 
			
		||||
        if (!ipconv) {
 | 
			
		||||
          // Convert IP to match subnet IP kind
 | 
			
		||||
          ipconv = subnetkind === 'ipv4'
 | 
			
		||||
            ? ip.toIPv4Address()
 | 
			
		||||
            : ip.toIPv4MappedAddress()
 | 
			
		||||
        }
 | 
			
		||||
 | 
			
		||||
        trusted = ipconv
 | 
			
		||||
      }
 | 
			
		||||
 | 
			
		||||
      if (trusted.match(subnetip, subnetrange)) {
 | 
			
		||||
        return true
 | 
			
		||||
      }
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    return false
 | 
			
		||||
  }
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * Compile trust function for single subnet.
 | 
			
		||||
 *
 | 
			
		||||
 * @param {Object} subnet
 | 
			
		||||
 * @private
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
function trustSingle (subnet) {
 | 
			
		||||
  var subnetip = subnet[0]
 | 
			
		||||
  var subnetkind = subnetip.kind()
 | 
			
		||||
  var subnetisipv4 = subnetkind === 'ipv4'
 | 
			
		||||
  var subnetrange = subnet[1]
 | 
			
		||||
 | 
			
		||||
  return function trust (addr) {
 | 
			
		||||
    if (!isip(addr)) return false
 | 
			
		||||
 | 
			
		||||
    var ip = parseip(addr)
 | 
			
		||||
    var kind = ip.kind()
 | 
			
		||||
 | 
			
		||||
    if (kind !== subnetkind) {
 | 
			
		||||
      if (subnetisipv4 && !ip.isIPv4MappedAddress()) {
 | 
			
		||||
        // Incompatible IP addresses
 | 
			
		||||
        return false
 | 
			
		||||
      }
 | 
			
		||||
 | 
			
		||||
      // Convert IP to match subnet IP kind
 | 
			
		||||
      ip = subnetisipv4
 | 
			
		||||
        ? ip.toIPv4Address()
 | 
			
		||||
        : ip.toIPv4MappedAddress()
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    return ip.match(subnetip, subnetrange)
 | 
			
		||||
  }
 | 
			
		||||
}
 | 
			
		||||
							
								
								
									
										82
									
								
								node_modules/proxy-addr/package.json
									
										
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							
							
						
						
									
										82
									
								
								node_modules/proxy-addr/package.json
									
										
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							| 
						 | 
				
			
			@ -0,0 +1,82 @@
 | 
			
		|||
{
 | 
			
		||||
  "_from": "proxy-addr@~2.0.5",
 | 
			
		||||
  "_id": "proxy-addr@2.0.6",
 | 
			
		||||
  "_inBundle": false,
 | 
			
		||||
  "_integrity": "sha512-dh/frvCBVmSsDYzw6n926jv974gddhkFPfiN8hPOi30Wax25QZyZEGveluCgliBnqmuM+UJmBErbAUFIoDbjOw==",
 | 
			
		||||
  "_location": "/proxy-addr",
 | 
			
		||||
  "_phantomChildren": {},
 | 
			
		||||
  "_requested": {
 | 
			
		||||
    "type": "range",
 | 
			
		||||
    "registry": true,
 | 
			
		||||
    "raw": "proxy-addr@~2.0.5",
 | 
			
		||||
    "name": "proxy-addr",
 | 
			
		||||
    "escapedName": "proxy-addr",
 | 
			
		||||
    "rawSpec": "~2.0.5",
 | 
			
		||||
    "saveSpec": null,
 | 
			
		||||
    "fetchSpec": "~2.0.5"
 | 
			
		||||
  },
 | 
			
		||||
  "_requiredBy": [
 | 
			
		||||
    "/express"
 | 
			
		||||
  ],
 | 
			
		||||
  "_resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.6.tgz",
 | 
			
		||||
  "_shasum": "fdc2336505447d3f2f2c638ed272caf614bbb2bf",
 | 
			
		||||
  "_spec": "proxy-addr@~2.0.5",
 | 
			
		||||
  "_where": "D:\\Documents\\UniWork\\Year 4\\Semester 2\\SEG3125\\Labs\\Lab 6\\Survey_Analysis\\node_modules\\express",
 | 
			
		||||
  "author": {
 | 
			
		||||
    "name": "Douglas Christopher Wilson",
 | 
			
		||||
    "email": "doug@somethingdoug.com"
 | 
			
		||||
  },
 | 
			
		||||
  "bugs": {
 | 
			
		||||
    "url": "https://github.com/jshttp/proxy-addr/issues"
 | 
			
		||||
  },
 | 
			
		||||
  "bundleDependencies": false,
 | 
			
		||||
  "dependencies": {
 | 
			
		||||
    "forwarded": "~0.1.2",
 | 
			
		||||
    "ipaddr.js": "1.9.1"
 | 
			
		||||
  },
 | 
			
		||||
  "deprecated": false,
 | 
			
		||||
  "description": "Determine address of proxied request",
 | 
			
		||||
  "devDependencies": {
 | 
			
		||||
    "beautify-benchmark": "0.2.4",
 | 
			
		||||
    "benchmark": "2.1.4",
 | 
			
		||||
    "deep-equal": "1.0.1",
 | 
			
		||||
    "eslint": "6.8.0",
 | 
			
		||||
    "eslint-config-standard": "14.1.0",
 | 
			
		||||
    "eslint-plugin-import": "2.20.1",
 | 
			
		||||
    "eslint-plugin-markdown": "1.0.1",
 | 
			
		||||
    "eslint-plugin-node": "11.0.0",
 | 
			
		||||
    "eslint-plugin-promise": "4.2.1",
 | 
			
		||||
    "eslint-plugin-standard": "4.0.1",
 | 
			
		||||
    "mocha": "7.0.1",
 | 
			
		||||
    "nyc": "15.0.0"
 | 
			
		||||
  },
 | 
			
		||||
  "engines": {
 | 
			
		||||
    "node": ">= 0.10"
 | 
			
		||||
  },
 | 
			
		||||
  "files": [
 | 
			
		||||
    "LICENSE",
 | 
			
		||||
    "HISTORY.md",
 | 
			
		||||
    "README.md",
 | 
			
		||||
    "index.js"
 | 
			
		||||
  ],
 | 
			
		||||
  "homepage": "https://github.com/jshttp/proxy-addr#readme",
 | 
			
		||||
  "keywords": [
 | 
			
		||||
    "ip",
 | 
			
		||||
    "proxy",
 | 
			
		||||
    "x-forwarded-for"
 | 
			
		||||
  ],
 | 
			
		||||
  "license": "MIT",
 | 
			
		||||
  "name": "proxy-addr",
 | 
			
		||||
  "repository": {
 | 
			
		||||
    "type": "git",
 | 
			
		||||
    "url": "git+https://github.com/jshttp/proxy-addr.git"
 | 
			
		||||
  },
 | 
			
		||||
  "scripts": {
 | 
			
		||||
    "bench": "node benchmark/index.js",
 | 
			
		||||
    "lint": "eslint --plugin markdown --ext js,md .",
 | 
			
		||||
    "test": "mocha --reporter spec --bail --check-leaks test/",
 | 
			
		||||
    "test-cov": "nyc --reporter=text npm test",
 | 
			
		||||
    "test-travis": "nyc --reporter=html --reporter=text npm test"
 | 
			
		||||
  },
 | 
			
		||||
  "version": "2.0.6"
 | 
			
		||||
}
 | 
			
		||||
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