1 | /*!
|
---|
2 | * body-parser
|
---|
3 | * Copyright(c) 2014-2015 Douglas Christopher Wilson
|
---|
4 | * MIT Licensed
|
---|
5 | */
|
---|
6 |
|
---|
7 | 'use strict'
|
---|
8 |
|
---|
9 | /**
|
---|
10 | * Module dependencies.
|
---|
11 | */
|
---|
12 |
|
---|
13 | var bytes = require('bytes')
|
---|
14 | var contentType = require('content-type')
|
---|
15 | var debug = require('debug')('body-parser:text')
|
---|
16 | var read = require('../read')
|
---|
17 | var typeis = require('type-is')
|
---|
18 |
|
---|
19 | /**
|
---|
20 | * Module exports.
|
---|
21 | */
|
---|
22 |
|
---|
23 | module.exports = text
|
---|
24 |
|
---|
25 | /**
|
---|
26 | * Create a middleware to parse text bodies.
|
---|
27 | *
|
---|
28 | * @param {object} [options]
|
---|
29 | * @return {function}
|
---|
30 | * @api public
|
---|
31 | */
|
---|
32 |
|
---|
33 | function text (options) {
|
---|
34 | var opts = options || {}
|
---|
35 |
|
---|
36 | var defaultCharset = opts.defaultCharset || 'utf-8'
|
---|
37 | var inflate = opts.inflate !== false
|
---|
38 | var limit = typeof opts.limit !== 'number'
|
---|
39 | ? bytes.parse(opts.limit || '100kb')
|
---|
40 | : opts.limit
|
---|
41 | var type = opts.type || 'text/plain'
|
---|
42 | var verify = opts.verify || false
|
---|
43 |
|
---|
44 | if (verify !== false && typeof verify !== 'function') {
|
---|
45 | throw new TypeError('option verify must be function')
|
---|
46 | }
|
---|
47 |
|
---|
48 | // create the appropriate type checking function
|
---|
49 | var shouldParse = typeof type !== 'function'
|
---|
50 | ? typeChecker(type)
|
---|
51 | : type
|
---|
52 |
|
---|
53 | function parse (buf) {
|
---|
54 | return buf
|
---|
55 | }
|
---|
56 |
|
---|
57 | return function textParser (req, res, next) {
|
---|
58 | if (req._body) {
|
---|
59 | debug('body already parsed')
|
---|
60 | next()
|
---|
61 | return
|
---|
62 | }
|
---|
63 |
|
---|
64 | req.body = req.body || {}
|
---|
65 |
|
---|
66 | // skip requests without bodies
|
---|
67 | if (!typeis.hasBody(req)) {
|
---|
68 | debug('skip empty body')
|
---|
69 | next()
|
---|
70 | return
|
---|
71 | }
|
---|
72 |
|
---|
73 | debug('content-type %j', req.headers['content-type'])
|
---|
74 |
|
---|
75 | // determine if request should be parsed
|
---|
76 | if (!shouldParse(req)) {
|
---|
77 | debug('skip parsing')
|
---|
78 | next()
|
---|
79 | return
|
---|
80 | }
|
---|
81 |
|
---|
82 | // get charset
|
---|
83 | var charset = getCharset(req) || defaultCharset
|
---|
84 |
|
---|
85 | // read
|
---|
86 | read(req, res, next, parse, debug, {
|
---|
87 | encoding: charset,
|
---|
88 | inflate: inflate,
|
---|
89 | limit: limit,
|
---|
90 | verify: verify
|
---|
91 | })
|
---|
92 | }
|
---|
93 | }
|
---|
94 |
|
---|
95 | /**
|
---|
96 | * Get the charset of a request.
|
---|
97 | *
|
---|
98 | * @param {object} req
|
---|
99 | * @api private
|
---|
100 | */
|
---|
101 |
|
---|
102 | function getCharset (req) {
|
---|
103 | try {
|
---|
104 | return (contentType.parse(req).parameters.charset || '').toLowerCase()
|
---|
105 | } catch (e) {
|
---|
106 | return undefined
|
---|
107 | }
|
---|
108 | }
|
---|
109 |
|
---|
110 | /**
|
---|
111 | * Get the simple type checker.
|
---|
112 | *
|
---|
113 | * @param {string} type
|
---|
114 | * @return {function}
|
---|
115 | */
|
---|
116 |
|
---|
117 | function typeChecker (type) {
|
---|
118 | return function checkType (req) {
|
---|
119 | return Boolean(typeis(req, type))
|
---|
120 | }
|
---|
121 | }
|
---|