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 debug = require('debug')('body-parser:raw')
14  var isFinished = require('on-finished').isFinished
15  var read = require('../read')
16  var typeis = require('type-is')
17  var { normalizeOptions } = require('../utils')
18  
19  /**
20   * Module exports.
21   */
22  
23  module.exports = raw
24  
25  /**
26   * Create a middleware to parse raw bodies.
27   *
28   * @param {object} [options]
29   * @return {function}
30   * @api public
31   */
32  
33  function raw (options) {
34    var { inflate, limit, verify, shouldParse } = normalizeOptions(options, 'application/octet-stream')
35  
36    function parse (buf) {
37      return buf
38    }
39  
40    return function rawParser (req, res, next) {
41      if (isFinished(req)) {
42        debug('body already parsed')
43        next()
44        return
45      }
46  
47      if (!('body' in req)) {
48        req.body = undefined
49      }
50  
51      // skip requests without bodies
52      if (!typeis.hasBody(req)) {
53        debug('skip empty body')
54        next()
55        return
56      }
57  
58      debug('content-type %j', req.headers['content-type'])
59  
60      // determine if request should be parsed
61      if (!shouldParse(req)) {
62        debug('skip parsing')
63        next()
64        return
65      }
66  
67      // read
68      read(req, res, next, parse, debug, {
69        encoding: null,
70        inflate,
71        limit,
72        verify
73      })
74    }
75  }