-
Notifications
You must be signed in to change notification settings - Fork 521
/
authorizationServer.js
281 lines (227 loc) · 7.8 KB
/
authorizationServer.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
var express = require("express");
var url = require("url");
var bodyParser = require('body-parser');
var randomstring = require("randomstring");
var cons = require('consolidate');
var nosql = require('nosql').load('database.nosql');
var querystring = require('querystring');
var __ = require('underscore');
__.string = require('underscore.string');
var app = express();
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true })); // support form-encoded bodies (for the token endpoint)
app.engine('html', cons.underscore);
app.set('view engine', 'html');
app.set('views', 'files/authorizationServer');
app.set('json spaces', 4);
// authorization server information
var authServer = {
authorizationEndpoint: 'http://localhost:9001/authorize',
tokenEndpoint: 'http://localhost:9001/token'
};
// client information
var clients = [
{
"client_id": "oauth-client-1",
"client_secret": "oauth-client-secret-1",
"redirect_uris": ["http://localhost:9000/callback"],
"scope": "foo bar"
}
];
var codes = {};
var requests = {};
var getClient = function(clientId) {
return __.find(clients, function(client) { return client.client_id == clientId; });
};
app.get('/', function(req, res) {
res.render('index', {clients: clients, authServer: authServer});
});
app.get("/authorize", function(req, res){
var client = getClient(req.query.client_id);
if (!client) {
console.log('Unknown client %s', req.query.client_id);
res.render('error', {error: 'Unknown client'});
return;
} else if (!__.contains(client.redirect_uris, req.query.redirect_uri)) {
console.log('Mismatched redirect URI, expected %s got %s', client.redirect_uris, req.query.redirect_uri);
res.render('error', {error: 'Invalid redirect URI'});
return;
} else {
var rscope = req.query.scope ? req.query.scope.split(' ') : undefined;
var cscope = client.scope ? client.scope.split(' ') : undefined;
if (__.difference(rscope, cscope).length > 0) {
var urlParsed = buildUrl(query.redirect_uri, {
error: 'invalid_scope'
});
res.redirect(urlParsed);
return;
}
var reqid = randomstring.generate(8);
requests[reqid] = req.query;
res.render('approve', {client: client, reqid: reqid, scope: rscope});
return;
}
});
app.post('/approve', function(req, res) {
var reqid = req.body.reqid;
var query = requests[reqid];
delete requests[reqid];
if (!query) {
// there was no matching saved request, this is an error
res.render('error', {error: 'No matching authorization request'});
return;
}
if (req.body.approve) {
if (query.response_type == 'code') {
// user approved access
var rscope = getScopesFromForm(req.body);
var client = getClient(query.client_id);
var cscope = client.scope ? client.scope.split(' ') : undefined;
if (__.difference(rscope, cscope).length > 0) {
var urlParsed = buildUrl(query.redirect_uri, {
error: 'invalid_scope'
});
res.redirect(urlParsed);
return;
}
var code = randomstring.generate(8);
// save the code and request for later
codes[code] = { request: query, scope: rscope };
var urlParsed = buildUrl(query.redirect_uri, {
code: code,
state: query.state
});
res.redirect(urlParsed);
return;
} else {
// we got a response type we don't understand
var urlParsed = buildUrl(query.redirect_uri, {
error: 'unsupported_response_type'
});
res.redirect(urlParsed);
return;
}
} else {
// user denied access
var urlParsed = buildUrl(query.redirect_uri, {
error: 'access_denied'
});
res.redirect(urlParsed);
return;
}
});
app.post("/token", function(req, res){
var auth = req.headers['authorization'];
if (auth) {
// check the auth header
var clientCredentials = decodeClientCredentials(auth);
var clientId = clientCredentials.id;
var clientSecret = clientCredentials.secret;
}
// otherwise, check the post body
if (req.body.client_id) {
if (clientId) {
// if we've already seen the client's credentials in the authorization header, this is an error
console.log('Client attempted to authenticate with multiple methods');
res.status(401).json({error: 'invalid_client'});
return;
}
var clientId = req.body.client_id;
var clientSecret = req.body.client_secret;
}
var client = getClient(clientId);
if (!client) {
console.log('Unknown client %s', clientId);
res.status(401).json({error: 'invalid_client'});
return;
}
if (client.client_secret != clientSecret) {
console.log('Mismatched client secret, expected %s got %s', client.client_secret, clientSecret);
res.status(401).json({error: 'invalid_client'});
return;
}
if (req.body.grant_type == 'authorization_code') {
var code = codes[req.body.code];
if (code) {
delete codes[req.body.code]; // burn our code, it's been used
if (code.request.client_id == clientId) {
var access_token = randomstring.generate();
var refresh_token = randomstring.generate();
nosql.insert({ access_token: access_token, client_id: clientId, scope: code.scope });
nosql.insert({ refresh_token: refresh_token, client_id: clientId, scope: code.scope });
console.log('Issuing access token %s', access_token);
var token_response = { access_token: access_token, token_type: 'Bearer', refresh_token: refresh_token, scope: code.scope.join(' ') };
res.status(200).json(token_response);
console.log('Issued tokens for code %s', req.body.code);
return;
} else {
console.log('Client mismatch, expected %s got %s', code.request.client_id, clientId);
res.status(400).json({error: 'invalid_grant'});
return;
}
} else {
console.log('Unknown code, %s', req.body.code);
res.status(400).json({error: 'invalid_grant'});
return;
}
} else if (req.body.grant_type == 'refresh_token') {
nosql.one(function(token) {
if (token.refresh_token == req.body.refresh_token) {
return token;
}
}, function(err, token) {
if (token) {
console.log("We found a matching refresh token: %s", req.body.refresh_token);
if (token.client_id != clientId) {
nosql.remove(function(found) { return (found == token); }, function () {} );
res.status(400).json({error: 'invalid_grant'});
return;
}
var access_token = randomstring.generate();
nosql.insert({ access_token: access_token, client_id: clientId });
var token_response = { access_token: access_token, token_type: 'Bearer', refresh_token: token.refresh_token };
res.status(200).json(token_response);
return;
} else {
console.log('No matching token was found.');
res.status(400).json({error: 'invalid_grant'});
return;
}
});
} else {
console.log('Unknown grant type %s', req.body.grant_type);
res.status(400).json({error: 'unsupported_grant_type'});
}
});
var buildUrl = function(base, options, hash) {
var newUrl = url.parse(base, true);
delete newUrl.search;
if (!newUrl.query) {
newUrl.query = {};
}
__.each(options, function(value, key, list) {
newUrl.query[key] = value;
});
if (hash) {
newUrl.hash = hash;
}
return url.format(newUrl);
};
var decodeClientCredentials = function(auth) {
var clientCredentials = new Buffer(auth.slice('basic '.length), 'base64').toString().split(':');
var clientId = querystring.unescape(clientCredentials[0]);
var clientSecret = querystring.unescape(clientCredentials[1]);
return { id: clientId, secret: clientSecret };
};
var getScopesFromForm = function(body) {
return __.filter(__.keys(body), function(s) { return __.string.startsWith(s, 'scope_'); })
.map(function(s) { return s.slice('scope_'.length); });
};
app.use('/', express.static('files/authorizationServer'));
// clear the database
nosql.clear();
var server = app.listen(9001, 'localhost', function () {
var host = server.address().address;
var port = server.address().port;
console.log('OAuth Authorization Server is listening at http://%s:%s', host, port);
});