From 4f27eefd6ec24a2644e674850f5a2b5d4928b168 Mon Sep 17 00:00:00 2001 From: Biswakalyan Bhuyan Date: Thu, 25 Jul 2024 12:10:39 +0530 Subject: added .gitignore --- backend/node_modules/proxy-addr/index.js | 327 ------------------------------- 1 file changed, 327 deletions(-) delete mode 100644 backend/node_modules/proxy-addr/index.js (limited to 'backend/node_modules/proxy-addr/index.js') diff --git a/backend/node_modules/proxy-addr/index.js b/backend/node_modules/proxy-addr/index.js deleted file mode 100644 index a909b05..0000000 --- a/backend/node_modules/proxy-addr/index.js +++ /dev/null @@ -1,327 +0,0 @@ -/*! - * 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) - } -} -- cgit v1.2.3-59-g8ed1b