基于Javascript的express-referer防盗链Node.js设计源码

(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Qs = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){ 'use strict'; var replace = String.prototype.replace; var percentTwenties = /%20/g; var Format = { RFC1738: 'RFC1738', RFC3986: 'RFC3986' }; module.exports = { 'default': Format.RFC3986, formatters: { RFC1738: function (value) { return replace.call(value, percentTwenties, '+'); }, RFC3986: function (value) { return String(value); } }, RFC1738: Format.RFC1738, RFC3986: Format.RFC3986 }; },{}],2:[function(require,module,exports){ 'use strict'; var stringify = require('./stringify'); var parse = require('./parse'); var formats = require('./formats'); module.exports = { formats: formats, parse: parse, stringify: stringify }; },{"./formats":1,"./parse":3,"./stringify":4}],3:[function(require,module,exports){ 'use strict'; var utils = require('./utils'); var has = Object.prototype.hasOwnProperty; var isArray = Array.isArray; var defaults = { allowDots: false, allowPrototypes: false, allowSparse: false, arrayLimit: 20, charset: 'utf-8', charsetSentinel: false, comma: false, decoder: utils.decode, delimiter: '&', depth: 5, ignoreQueryPrefix: false, interpretNumericEntities: false, parameterLimit: 1000, parseArrays: true, plainObjects: false, strictNullHandling: false }; var interpretNumericEntities = function (str) { return str.replace(/&#(\d+);/g, function ($0, numberStr) { return String.fromCharCode(parseInt(numberStr, 10)); }); }; var parseArrayValue = function (val, options) { if (val && typeof val === 'string' && options.comma && val.indexOf(',') > -1) { return val.split(','); } return val; }; // This is what browsers will submit when the ✓ character occurs in an // application/x-www-form-urlencoded body and the encoding of the page containing // the form is iso-8859-1, or when the submitted form has an accept-charset // attribute of iso-8859-1. Presumably also with other charsets that do not contain // the ✓ character, such as us-ascii. var isoSentinel = 'utf8=%26%2310003%3B'; // encodeURIComponent('&#10003;') // These are the percent-encoded utf-8 octets representing a checkmark, indicating that the request actually is utf-8 encoded. var charsetSentinel = 'utf8=%E2%9C%93'; // encodeURIComponent('✓') var parseValues = function parseQueryStringValues(str, options) { var obj = {}; var cleanStr = options.ignoreQueryPrefix ? str.replace(/^\?/, '') : str; var limit = options.parameterLimit === Infinity ? undefined : options.parameterLimit; var parts = cleanStr.split(options.delimiter, limit); var skipIndex = -1; // Keep track of where the utf8 sentinel was found var i; var charset = options.charset; if (options.charsetSentinel) { for (i = 0; i < parts.length; ++i) { if (parts[i].indexOf('utf8=') === 0) { if (parts[i] === charsetSentinel) { charset = 'utf-8'; } else if (parts[i] === isoSentinel) { charset = 'iso-8859-1'; } skipIndex = i; i = parts.length; // The eslint settings do not allow break; } } } for (i = 0; i < parts.length; ++i) { if (i === skipIndex) { continue; } var part = parts[i]; var bracketEqualsPos = part.indexOf(']='); var pos = bracketEqualsPos === -1 ? part.indexOf('=') : bracketEqualsPos + 1; var key, val; if (pos === -1) { key = options.decoder(part, defaults.decoder, charset, 'key'); val = options.strictNullHandling ? null : ''; } else { key = options.decoder(part.slice(0, pos), defaults.decoder, charset, 'key'); val = utils.maybeMap( parseArrayValue(part.slice(pos + 1), options), function (encodedVal) { return options.decoder(encodedVal, defaults.decoder, charset, 'value'); } ); } if (val && options.interpretNumericEntities && charset === 'iso-8859-1') { val = interpretNumericEntities(val); } if (part.indexOf('[]=') > -1) { val = isArray(val) ? [val] : val; } if (has.call(obj, key)) { obj[key] = utils.combine(obj[key], val); } else { obj[key] = val; } } return obj; }; var parseObject = function (chain, val, options, valuesParsed) { var leaf = valuesParsed ? val : parseArrayValue(val, options); for (var i = chain.length - 1; i >= 0; --i) { var obj; var root = chain[i]; if (root === '[]' && options.parseArrays) { obj = [].concat(leaf); } else { obj = options.plainObjects ? Object.create(null) : {}; var cleanRoot = root.charAt(0) === '[' && root.charAt(root.length - 1) === ']' ? root.slice(1, -1) : root; var index = parseInt(cleanRoot, 10); if (!options.parseArrays && cleanRoot === '') { obj = { 0: leaf }; } else if ( !isNaN(index) && root !== cleanRoot && String(index) === cleanRoot && index >= 0 && (options.parseArrays && index <= options.arrayLimit) ) { obj = []; obj[index] = leaf; } else if (cleanRoot !== '__proto__') { obj[cleanRoot] = leaf; } } leaf = obj; } return leaf; }; var parseKeys = function parseQueryStringKeys(givenKey, val, options, valuesParsed) { if (!givenKey) { return; } // Transform dot notation to bracket notation var key = options.allowDots ? givenKey.replace(/\.([^.[]+)/g, '[$1]') : givenKey; // The regex chunks var brackets = /(\[[^[\]]*])/; var child = /(\[[^[\]]*])/g; // Get the parent var segment = options.depth > 0 && brackets.exec(key); var parent = segment ? key.slice(0, segment.index) : key; // Stash the parent if it exists var keys = []; if (parent) { // If we aren't using plain objects, optionally prefix keys that would overwrite object prototype properties if (!options.plainObjects && has.call(Object.prototype, parent)) { if (!options.allowPrototypes) { return; } } keys.push(parent); } // Loop through children appending to the array until we hit depth var i = 0; while (options.depth > 0 && (segment = child.exec(key)) !== null && i < options.depth) { i += 1; if (!options.plainObjects && has.call(Object.prototype, segment[1].slice(1, -1))) { if (!options.allowPrototypes) { return; } } keys.push(segment[1]); } // If there's a remainder, just add whatever is left if (segment) { keys.push('[' + key.slice(segment.index) + ']'); } return parseObject(keys, val