source: trip-planner-front/node_modules/needle/lib/auth.js

Last change on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 2.4 KB
Line 
1var createHash = require('crypto').createHash;
2
3function get_header(header, credentials, opts) {
4 var type = header.split(' ')[0],
5 user = credentials[0],
6 pass = credentials[1];
7
8 if (type == 'Digest') {
9 return digest.generate(header, user, pass, opts.method, opts.path);
10 } else if (type == 'Basic') {
11 return basic(user, pass);
12 }
13}
14
15////////////////////
16// basic
17
18function md5(string) {
19 return createHash('md5').update(string).digest('hex');
20}
21
22function basic(user, pass) {
23 var str = typeof pass == 'undefined' ? user : [user, pass].join(':');
24 return 'Basic ' + Buffer.from(str).toString('base64');
25}
26
27////////////////////
28// digest
29// logic inspired from https://github.com/simme/node-http-digest-client
30
31var digest = {};
32
33digest.parse_header = function(header) {
34 var challenge = {},
35 matches = header.match(/([a-z0-9_-]+)="?([a-z0-9_=\/\.@\s-\+)()]+)"?/gi);
36
37 for (var i = 0, l = matches.length; i < l; i++) {
38 var parts = matches[i].split('='),
39 key = parts.shift(),
40 val = parts.join('=').replace(/^"/, '').replace(/"$/, '');
41
42 challenge[key] = val;
43 }
44
45 return challenge;
46}
47
48digest.update_nc = function(nc) {
49 var max = 99999999;
50 nc++;
51
52 if (nc > max)
53 nc = 1;
54
55 var padding = new Array(8).join('0') + '';
56 nc = nc + '';
57 return padding.substr(0, 8 - nc.length) + nc;
58}
59
60digest.generate = function(header, user, pass, method, path) {
61
62 var nc = 1,
63 cnonce = null,
64 challenge = digest.parse_header(header);
65
66 var ha1 = md5(user + ':' + challenge.realm + ':' + pass),
67 ha2 = md5(method.toUpperCase() + ':' + path),
68 resp = [ha1, challenge.nonce];
69
70 if (typeof challenge.qop === 'string') {
71 cnonce = md5(Math.random().toString(36)).substr(0, 8);
72 nc = digest.update_nc(nc);
73 resp = resp.concat(nc, cnonce);
74 resp = resp.concat(challenge.qop, ha2);
75 } else {
76 resp = resp.concat(ha2);
77 }
78
79
80 var params = {
81 uri : path,
82 realm : challenge.realm,
83 nonce : challenge.nonce,
84 username : user,
85 response : md5(resp.join(':'))
86 }
87
88 if (challenge.qop) {
89 params.qop = challenge.qop;
90 }
91
92 if (challenge.opaque) {
93 params.opaque = challenge.opaque;
94 }
95
96 if (cnonce) {
97 params.nc = nc;
98 params.cnonce = cnonce;
99 }
100
101 header = []
102 for (var k in params)
103 header.push(k + '="' + params[k] + '"')
104
105 return 'Digest ' + header.join(', ');
106}
107
108module.exports = {
109 header : get_header,
110 basic : basic,
111 digest : digest.generate
112}
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