667 lines
13 KiB
JavaScript
667 lines
13 KiB
JavaScript
|
|
'use strict';
|
|
|
|
/**
|
|
* Module dependencies.
|
|
*/
|
|
|
|
const URL = require('url').URL;
|
|
const net = require('net');
|
|
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');
|
|
|
|
/**
|
|
* Prototype.
|
|
*/
|
|
|
|
module.exports = {
|
|
|
|
/**
|
|
* Return request header.
|
|
*
|
|
* @return {Object}
|
|
* @api public
|
|
*/
|
|
|
|
get header() {
|
|
return this.req.headers;
|
|
},
|
|
|
|
/**
|
|
* Set request header.
|
|
*
|
|
* @api public
|
|
*/
|
|
|
|
set header(val) {
|
|
this.req.headers = val;
|
|
},
|
|
|
|
/**
|
|
* Return request header, alias as request.header
|
|
*
|
|
* @return {Object}
|
|
* @api public
|
|
*/
|
|
|
|
get headers() {
|
|
return this.req.headers;
|
|
},
|
|
|
|
/**
|
|
* Set request header, alias as request.header
|
|
*
|
|
* @api public
|
|
*/
|
|
|
|
set headers(val) {
|
|
this.req.headers = val;
|
|
},
|
|
|
|
/**
|
|
* Get request URL.
|
|
*
|
|
* @return {String}
|
|
* @api public
|
|
*/
|
|
|
|
get url() {
|
|
return this.req.url;
|
|
},
|
|
|
|
/**
|
|
* Set request URL.
|
|
*
|
|
* @api public
|
|
*/
|
|
|
|
set url(val) {
|
|
this.req.url = val;
|
|
},
|
|
|
|
/**
|
|
* Get origin of URL.
|
|
*
|
|
* @return {String}
|
|
* @api public
|
|
*/
|
|
|
|
get origin() {
|
|
return `${this.protocol}://${this.host}`;
|
|
},
|
|
|
|
/**
|
|
* Get full request URL.
|
|
*
|
|
* @return {String}
|
|
* @api public
|
|
*/
|
|
|
|
get href() {
|
|
// support: `GET http://example.com/foo`
|
|
if (/^https?:\/\//i.test(this.originalUrl)) return this.originalUrl;
|
|
return this.origin + this.originalUrl;
|
|
},
|
|
|
|
/**
|
|
* Get request method.
|
|
*
|
|
* @return {String}
|
|
* @api public
|
|
*/
|
|
|
|
get method() {
|
|
return this.req.method;
|
|
},
|
|
|
|
/**
|
|
* Set request method.
|
|
*
|
|
* @param {String} val
|
|
* @api public
|
|
*/
|
|
|
|
set method(val) {
|
|
this.req.method = val;
|
|
},
|
|
|
|
/**
|
|
* Get request pathname.
|
|
*
|
|
* @return {String}
|
|
* @api public
|
|
*/
|
|
|
|
get path() {
|
|
return parse(this.req).pathname;
|
|
},
|
|
|
|
/**
|
|
* Set pathname, retaining the query-string when present.
|
|
*
|
|
* @param {String} path
|
|
* @api public
|
|
*/
|
|
|
|
set path(path) {
|
|
const url = parse(this.req);
|
|
if (url.pathname === path) return;
|
|
|
|
url.pathname = path;
|
|
url.path = null;
|
|
|
|
this.url = stringify(url);
|
|
},
|
|
|
|
/**
|
|
* Get parsed query-string.
|
|
*
|
|
* @return {Object}
|
|
* @api public
|
|
*/
|
|
|
|
get query() {
|
|
const str = this.querystring;
|
|
const c = this._querycache = this._querycache || {};
|
|
return c[str] || (c[str] = qs.parse(str));
|
|
},
|
|
|
|
/**
|
|
* Set query-string as an object.
|
|
*
|
|
* @param {Object} obj
|
|
* @api public
|
|
*/
|
|
|
|
set query(obj) {
|
|
this.querystring = qs.stringify(obj);
|
|
},
|
|
|
|
/**
|
|
* Get query string.
|
|
*
|
|
* @return {String}
|
|
* @api public
|
|
*/
|
|
|
|
get querystring() {
|
|
if (!this.req) return '';
|
|
return parse(this.req).query || '';
|
|
},
|
|
|
|
/**
|
|
* Set querystring.
|
|
*
|
|
* @param {String} str
|
|
* @api public
|
|
*/
|
|
|
|
set querystring(str) {
|
|
const url = parse(this.req);
|
|
if (url.search === `?${str}`) return;
|
|
|
|
url.search = str;
|
|
url.path = null;
|
|
|
|
this.url = stringify(url);
|
|
},
|
|
|
|
/**
|
|
* Get the search string. Same as the querystring
|
|
* except it includes the leading ?.
|
|
*
|
|
* @return {String}
|
|
* @api public
|
|
*/
|
|
|
|
get search() {
|
|
if (!this.querystring) return '';
|
|
return `?${this.querystring}`;
|
|
},
|
|
|
|
/**
|
|
* Set the search string. Same as
|
|
* response.querystring= but included for ubiquity.
|
|
*
|
|
* @param {String} str
|
|
* @api public
|
|
*/
|
|
|
|
set search(str) {
|
|
this.querystring = str;
|
|
},
|
|
|
|
/**
|
|
* Parse the "Host" header field host
|
|
* and support X-Forwarded-Host when a
|
|
* proxy is enabled.
|
|
*
|
|
* @return {String} hostname:port
|
|
* @api public
|
|
*/
|
|
|
|
get host() {
|
|
const proxy = this.app.proxy;
|
|
let host = proxy && this.get('X-Forwarded-Host');
|
|
host = host || this.get('Host');
|
|
if (!host) return '';
|
|
return host.split(/\s*,\s*/)[0];
|
|
},
|
|
|
|
/**
|
|
* Parse the "Host" header field hostname
|
|
* and support X-Forwarded-Host when a
|
|
* proxy is enabled.
|
|
*
|
|
* @return {String} hostname
|
|
* @api public
|
|
*/
|
|
|
|
get hostname() {
|
|
const host = this.host;
|
|
if (!host) return '';
|
|
if ('[' == host[0]) return this.URL.hostname || ''; // IPv6
|
|
return host.split(':')[0];
|
|
},
|
|
|
|
/**
|
|
* Get WHATWG parsed URL.
|
|
* Lazily memoized.
|
|
*
|
|
* @return {URL|Object}
|
|
* @api public
|
|
*/
|
|
|
|
get URL() {
|
|
if (!this.memoizedURL) {
|
|
const protocol = this.protocol;
|
|
const host = this.host;
|
|
const originalUrl = this.originalUrl || ''; // avoid undefined in template string
|
|
try {
|
|
this.memoizedURL = new URL(`${protocol}://${host}${originalUrl}`);
|
|
} catch (err) {
|
|
this.memoizedURL = Object.create(null);
|
|
}
|
|
}
|
|
return this.memoizedURL;
|
|
},
|
|
|
|
/**
|
|
* Check if the request is fresh, aka
|
|
* Last-Modified and/or the ETag
|
|
* still match.
|
|
*
|
|
* @return {Boolean}
|
|
* @api public
|
|
*/
|
|
|
|
get fresh() {
|
|
const method = this.method;
|
|
const s = this.ctx.status;
|
|
|
|
// GET or HEAD for weak freshness validation only
|
|
if ('GET' != method && 'HEAD' != method) return false;
|
|
|
|
// 2xx or 304 as per rfc2616 14.26
|
|
if ((s >= 200 && s < 300) || 304 == s) {
|
|
return fresh(this.header, this.response.header);
|
|
}
|
|
|
|
return false;
|
|
},
|
|
|
|
/**
|
|
* Check if the request is stale, aka
|
|
* "Last-Modified" and / or the "ETag" for the
|
|
* resource has changed.
|
|
*
|
|
* @return {Boolean}
|
|
* @api public
|
|
*/
|
|
|
|
get stale() {
|
|
return !this.fresh;
|
|
},
|
|
|
|
/**
|
|
* Check if the request is idempotent.
|
|
*
|
|
* @return {Boolean}
|
|
* @api public
|
|
*/
|
|
|
|
get idempotent() {
|
|
const methods = ['GET', 'HEAD', 'PUT', 'DELETE', 'OPTIONS', 'TRACE'];
|
|
return !!~methods.indexOf(this.method);
|
|
},
|
|
|
|
/**
|
|
* Return the request socket.
|
|
*
|
|
* @return {Connection}
|
|
* @api public
|
|
*/
|
|
|
|
get socket() {
|
|
return this.req.socket;
|
|
},
|
|
|
|
/**
|
|
* Get the charset when present or undefined.
|
|
*
|
|
* @return {String}
|
|
* @api public
|
|
*/
|
|
|
|
get charset() {
|
|
let type = this.get('Content-Type');
|
|
if (!type) return '';
|
|
|
|
try {
|
|
type = contentType.parse(type);
|
|
} catch (e) {
|
|
return '';
|
|
}
|
|
|
|
return type.parameters.charset || '';
|
|
},
|
|
|
|
/**
|
|
* Return parsed Content-Length when present.
|
|
*
|
|
* @return {Number}
|
|
* @api public
|
|
*/
|
|
|
|
get length() {
|
|
const len = this.get('Content-Length');
|
|
if (len == '') return;
|
|
return ~~len;
|
|
},
|
|
|
|
/**
|
|
* Return the protocol string "http" or "https"
|
|
* when requested with TLS. When the proxy setting
|
|
* is enabled the "X-Forwarded-Proto" header
|
|
* field will be trusted. If you're running behind
|
|
* a reverse proxy that supplies https for you this
|
|
* may be enabled.
|
|
*
|
|
* @return {String}
|
|
* @api public
|
|
*/
|
|
|
|
get protocol() {
|
|
const proxy = this.app.proxy;
|
|
if (this.socket.encrypted) return 'https';
|
|
if (!proxy) return 'http';
|
|
const proto = this.get('X-Forwarded-Proto') || 'http';
|
|
return proto.split(/\s*,\s*/)[0];
|
|
},
|
|
|
|
/**
|
|
* Short-hand for:
|
|
*
|
|
* this.protocol == 'https'
|
|
*
|
|
* @return {Boolean}
|
|
* @api public
|
|
*/
|
|
|
|
get secure() {
|
|
return 'https' == this.protocol;
|
|
},
|
|
|
|
/**
|
|
* When `app.proxy` is `true`, parse
|
|
* the "X-Forwarded-For" ip address list.
|
|
*
|
|
* For example if the value were "client, proxy1, proxy2"
|
|
* you would receive the array `["client", "proxy1", "proxy2"]`
|
|
* where "proxy2" is the furthest down-stream.
|
|
*
|
|
* @return {Array}
|
|
* @api public
|
|
*/
|
|
|
|
get ips() {
|
|
const proxy = this.app.proxy;
|
|
const val = this.get('X-Forwarded-For');
|
|
return proxy && val
|
|
? val.split(/\s*,\s*/)
|
|
: [];
|
|
},
|
|
|
|
/**
|
|
* Return subdomains as an array.
|
|
*
|
|
* Subdomains are the dot-separated parts of the host before the main domain
|
|
* of the app. By default, the domain of the app is assumed to be the last two
|
|
* parts of the host. This can be changed by setting `app.subdomainOffset`.
|
|
*
|
|
* For example, if the domain is "tobi.ferrets.example.com":
|
|
* If `app.subdomainOffset` is not set, this.subdomains is
|
|
* `["ferrets", "tobi"]`.
|
|
* If `app.subdomainOffset` is 3, this.subdomains is `["tobi"]`.
|
|
*
|
|
* @return {Array}
|
|
* @api public
|
|
*/
|
|
|
|
get subdomains() {
|
|
const offset = this.app.subdomainOffset;
|
|
const hostname = this.hostname;
|
|
if (net.isIP(hostname)) return [];
|
|
return hostname
|
|
.split('.')
|
|
.reverse()
|
|
.slice(offset);
|
|
},
|
|
|
|
/**
|
|
* Check if the given `type(s)` is acceptable, returning
|
|
* the best match when true, otherwise `false`, in which
|
|
* case you should respond with 406 "Not Acceptable".
|
|
*
|
|
* The `type` value may be a single mime type string
|
|
* such as "application/json", the extension name
|
|
* such as "json" or an array `["json", "html", "text/plain"]`. When a list
|
|
* or array is given the _best_ match, if any is returned.
|
|
*
|
|
* Examples:
|
|
*
|
|
* // Accept: text/html
|
|
* this.accepts('html');
|
|
* // => "html"
|
|
*
|
|
* // Accept: text/*, application/json
|
|
* this.accepts('html');
|
|
* // => "html"
|
|
* this.accepts('text/html');
|
|
* // => "text/html"
|
|
* this.accepts('json', 'text');
|
|
* // => "json"
|
|
* this.accepts('application/json');
|
|
* // => "application/json"
|
|
*
|
|
* // Accept: text/*, application/json
|
|
* this.accepts('image/png');
|
|
* this.accepts('png');
|
|
* // => false
|
|
*
|
|
* // Accept: text/*;q=.5, application/json
|
|
* this.accepts(['html', 'json']);
|
|
* this.accepts('html', 'json');
|
|
* // => "json"
|
|
*
|
|
* @param {String|Array} type(s)...
|
|
* @return {String|Array|false}
|
|
* @api public
|
|
*/
|
|
|
|
accepts(...args) {
|
|
return this.accept.types(...args);
|
|
},
|
|
|
|
/**
|
|
* Return accepted encodings or best fit based on `encodings`.
|
|
*
|
|
* Given `Accept-Encoding: gzip, deflate`
|
|
* an array sorted by quality is returned:
|
|
*
|
|
* ['gzip', 'deflate']
|
|
*
|
|
* @param {String|Array} encoding(s)...
|
|
* @return {String|Array}
|
|
* @api public
|
|
*/
|
|
|
|
acceptsEncodings(...args) {
|
|
return this.accept.encodings(...args);
|
|
},
|
|
|
|
/**
|
|
* Return accepted charsets or best fit based on `charsets`.
|
|
*
|
|
* Given `Accept-Charset: utf-8, iso-8859-1;q=0.2, utf-7;q=0.5`
|
|
* an array sorted by quality is returned:
|
|
*
|
|
* ['utf-8', 'utf-7', 'iso-8859-1']
|
|
*
|
|
* @param {String|Array} charset(s)...
|
|
* @return {String|Array}
|
|
* @api public
|
|
*/
|
|
|
|
acceptsCharsets(...args) {
|
|
return this.accept.charsets(...args);
|
|
},
|
|
|
|
/**
|
|
* Return accepted languages or best fit based on `langs`.
|
|
*
|
|
* Given `Accept-Language: en;q=0.8, es, pt`
|
|
* an array sorted by quality is returned:
|
|
*
|
|
* ['es', 'pt', 'en']
|
|
*
|
|
* @param {String|Array} lang(s)...
|
|
* @return {Array|String}
|
|
* @api public
|
|
*/
|
|
|
|
acceptsLanguages(...args) {
|
|
return this.accept.languages(...args);
|
|
},
|
|
|
|
/**
|
|
* Check if the incoming request contains the "Content-Type"
|
|
* header field, and it contains any of the give mime `type`s.
|
|
* If there is no request body, `null` is returned.
|
|
* If there is no content type, `false` is returned.
|
|
* Otherwise, it returns the first `type` that matches.
|
|
*
|
|
* Examples:
|
|
*
|
|
* // With Content-Type: text/html; charset=utf-8
|
|
* this.is('html'); // => 'html'
|
|
* this.is('text/html'); // => 'text/html'
|
|
* this.is('text/*', 'application/json'); // => 'text/html'
|
|
*
|
|
* // When Content-Type is application/json
|
|
* this.is('json', 'urlencoded'); // => 'json'
|
|
* this.is('application/json'); // => 'application/json'
|
|
* this.is('html', 'application/*'); // => 'application/json'
|
|
*
|
|
* this.is('html'); // => false
|
|
*
|
|
* @param {String|Array} types...
|
|
* @return {String|false|null}
|
|
* @api public
|
|
*/
|
|
|
|
is(types) {
|
|
if (!types) return typeis(this.req);
|
|
if (!Array.isArray(types)) types = [].slice.call(arguments);
|
|
return typeis(this.req, types);
|
|
},
|
|
|
|
/**
|
|
* Return the request mime type void of
|
|
* parameters such as "charset".
|
|
*
|
|
* @return {String}
|
|
* @api public
|
|
*/
|
|
|
|
get type() {
|
|
const type = this.get('Content-Type');
|
|
if (!type) return '';
|
|
return type.split(';')[0];
|
|
},
|
|
|
|
/**
|
|
* Return request header.
|
|
*
|
|
* The `Referrer` header field is special-cased,
|
|
* both `Referrer` and `Referer` are interchangeable.
|
|
*
|
|
* Examples:
|
|
*
|
|
* this.get('Content-Type');
|
|
* // => "text/plain"
|
|
*
|
|
* this.get('content-type');
|
|
* // => "text/plain"
|
|
*
|
|
* this.get('Something');
|
|
* // => undefined
|
|
*
|
|
* @param {String} field
|
|
* @return {String}
|
|
* @api public
|
|
*/
|
|
|
|
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 implementation.
|
|
*
|
|
* @return {Object}
|
|
* @api public
|
|
*/
|
|
|
|
inspect() {
|
|
if (!this.req) return;
|
|
return this.toJSON();
|
|
},
|
|
|
|
/**
|
|
* Return JSON representation.
|
|
*
|
|
* @return {Object}
|
|
* @api public
|
|
*/
|
|
|
|
toJSON() {
|
|
return only(this, [
|
|
'method',
|
|
'url',
|
|
'header'
|
|
]);
|
|
}
|
|
};
|