123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726 |
- 'use strict';
- const URL = require('url').URL;
- const net = require('net');
- const accepts = require('accepts');
- const contentType = require('content-type');
- const stringify = require('url').format;
- const parse = require('parseurl');
- const qs = require('querystring');
- const typeis = require('type-is');
- const fresh = require('fresh');
- const only = require('only');
- const util = require('util');
- const IP = Symbol('context#ip');
- module.exports = {
-
- get header() {
- return this.req.headers;
- },
-
- set header(val) {
- this.req.headers = val;
- },
-
- get headers() {
- return this.req.headers;
- },
-
- set headers(val) {
- this.req.headers = val;
- },
-
- get url() {
- return this.req.url;
- },
-
- set url(val) {
- this.req.url = val;
- },
-
- get origin() {
- return `${this.protocol}://${this.host}`;
- },
-
- get href() {
-
- if (/^https?:\/\//i.test(this.originalUrl)) return this.originalUrl;
- return this.origin + this.originalUrl;
- },
-
- get method() {
- return this.req.method;
- },
-
- set method(val) {
- this.req.method = val;
- },
-
- get path() {
- return parse(this.req).pathname;
- },
-
- set path(path) {
- const url = parse(this.req);
- if (url.pathname === path) return;
- url.pathname = path;
- url.path = null;
- this.url = stringify(url);
- },
-
- get query() {
- const str = this.querystring;
- const c = this._querycache = this._querycache || {};
- return c[str] || (c[str] = qs.parse(str));
- },
-
- set query(obj) {
- this.querystring = qs.stringify(obj);
- },
-
- get querystring() {
- if (!this.req) return '';
- return parse(this.req).query || '';
- },
-
- set querystring(str) {
- const url = parse(this.req);
- if (url.search === `?${str}`) return;
- url.search = str;
- url.path = null;
- this.url = stringify(url);
- },
-
- get search() {
- if (!this.querystring) return '';
- return `?${this.querystring}`;
- },
-
- set search(str) {
- this.querystring = str;
- },
-
- get host() {
- const proxy = this.app.proxy;
- let host = proxy && this.get('X-Forwarded-Host');
- if (!host) {
- if (this.req.httpVersionMajor >= 2) host = this.get(':authority');
- if (!host) host = this.get('Host');
- }
- if (!host) return '';
- return host.split(/\s*,\s*/, 1)[0];
- },
-
- get hostname() {
- const host = this.host;
- if (!host) return '';
- if ('[' === host[0]) return this.URL.hostname || '';
- return host.split(':', 1)[0];
- },
-
- get URL() {
-
- if (!this.memoizedURL) {
- const originalUrl = this.originalUrl || '';
- try {
- this.memoizedURL = new URL(`${this.origin}${originalUrl}`);
- } catch (err) {
- this.memoizedURL = Object.create(null);
- }
- }
- return this.memoizedURL;
- },
-
- get fresh() {
- const method = this.method;
- const s = this.ctx.status;
-
- if ('GET' !== method && 'HEAD' !== method) return false;
-
- if ((s >= 200 && s < 300) || 304 === s) {
- return fresh(this.header, this.response.header);
- }
- return false;
- },
-
- get stale() {
- return !this.fresh;
- },
-
- get idempotent() {
- const methods = ['GET', 'HEAD', 'PUT', 'DELETE', 'OPTIONS', 'TRACE'];
- return !!~methods.indexOf(this.method);
- },
-
- get socket() {
- return this.req.socket;
- },
-
- get charset() {
- try {
- const { parameters } = contentType.parse(this.req);
- return parameters.charset || '';
- } catch (e) {
- return '';
- }
- },
-
- get length() {
- const len = this.get('Content-Length');
- if (len === '') return;
- return ~~len;
- },
-
- get protocol() {
- if (this.socket.encrypted) return 'https';
- if (!this.app.proxy) return 'http';
- const proto = this.get('X-Forwarded-Proto');
- return proto ? proto.split(/\s*,\s*/, 1)[0] : 'http';
- },
-
- get secure() {
- return 'https' === this.protocol;
- },
-
- get ips() {
- const proxy = this.app.proxy;
- const val = this.get(this.app.proxyIpHeader);
- let ips = proxy && val
- ? val.split(/\s*,\s*/)
- : [];
- if (this.app.maxIpsCount > 0) {
- ips = ips.slice(-this.app.maxIpsCount);
- }
- return ips;
- },
-
- get ip() {
- if (!this[IP]) {
- this[IP] = this.ips[0] || this.socket.remoteAddress || '';
- }
- return this[IP];
- },
- set ip(_ip) {
- this[IP] = _ip;
- },
-
- get subdomains() {
- const offset = this.app.subdomainOffset;
- const hostname = this.hostname;
- if (net.isIP(hostname)) return [];
- return hostname
- .split('.')
- .reverse()
- .slice(offset);
- },
-
- get accept() {
- return this._accept || (this._accept = accepts(this.req));
- },
-
- set accept(obj) {
- this._accept = obj;
- },
-
- accepts(...args) {
- return this.accept.types(...args);
- },
-
- acceptsEncodings(...args) {
- return this.accept.encodings(...args);
- },
-
- acceptsCharsets(...args) {
- return this.accept.charsets(...args);
- },
-
- acceptsLanguages(...args) {
- return this.accept.languages(...args);
- },
-
- is(type, ...types) {
- return typeis(this.req, type, ...types);
- },
-
- get type() {
- const type = this.get('Content-Type');
- if (!type) return '';
- return type.split(';')[0];
- },
-
- get(field) {
- const req = this.req;
- switch (field = field.toLowerCase()) {
- case 'referer':
- case 'referrer':
- return req.headers.referrer || req.headers.referer || '';
- default:
- return req.headers[field] || '';
- }
- },
-
- inspect() {
- if (!this.req) return;
- return this.toJSON();
- },
-
- toJSON() {
- return only(this, [
- 'method',
- 'url',
- 'header'
- ]);
- }
- };
- if (util.inspect.custom) {
- module.exports[util.inspect.custom] = module.exports.inspect;
- }
|