| 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 |
1
1
1
1
1
1
6
10
10
10
10
10
1
1
1
1
1
1
1
1
1
4
4
4
4
1
1
1
1
1
1
| /*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/**
* Credentials module
*
* This module contains factory methods for two different credential types:
* CallCredentials and ChannelCredentials. ChannelCredentials are things like
* SSL credentials that can be used to secure a connection, and are used to
* construct a Client object. CallCredentials genrally modify metadata, so they
* can be attached to an individual method call.
*
* CallCredentials can be composed with other CallCredentials to create
* CallCredentials. ChannelCredentials can be composed with CallCredentials
* to create ChannelCredentials. No combined credential can have more than
* one ChannelCredentials.
*
* For example, to create a client secured with SSL that uses Google
* default application credentials to authenticate:
*
* var channel_creds = credentials.createSsl(root_certs);
* (new GoogleAuth()).getApplicationDefault(function(err, credential) {
* var call_creds = credentials.createFromGoogleCredential(credential);
* var combined_creds = credentials.combineChannelCredentials(
* channel_creds, call_creds);
* var client = new Client(address, combined_creds);
* });
*
* @module
*/
'use strict';
var grpc = require('bindings')('grpc_node.node');
var CallCredentials = grpc.CallCredentials;
var ChannelCredentials = grpc.ChannelCredentials;
var Metadata = require('./metadata.js');
/**
* Create an SSL Credentials object. If using a client-side certificate, both
* the second and third arguments must be passed.
* @param {Buffer} root_certs The root certificate data
* @param {Buffer=} private_key The client certificate private key, if
* applicable
* @param {Buffer=} cert_chain The client certificate cert chain, if applicable
* @return {ChannelCredentials} The SSL Credentials object
*/
exports.createSsl = ChannelCredentials.createSsl;
/**
* Create a gRPC credentials object from a metadata generation function. This
* function gets the service URL and a callback as parameters. The error
* passed to the callback can optionally have a 'code' value attached to it,
* which corresponds to a status code that this library uses.
* @param {function(String, function(Error, Metadata))} metadata_generator The
* function that generates metadata
* @return {CallCredentials} The credentials object
*/
exports.createFromMetadataGenerator = function(metadata_generator) {
return CallCredentials.createFromPlugin(function(service_url, callback) {
metadata_generator({service_url: service_url}, function(error, metadata) {
var code = grpc.status.OK;
var message = '';
Iif (error) {
message = error.message;
if (error.hasOwnProperty('code')) {
code = error.code;
}
if (!metadata) {
metadata = new Metadata();
}
}
callback(code, message, metadata._getCoreRepresentation());
});
});
};
/**
* Create a gRPC credential from a Google credential object.
* @param {Object} google_credential The Google credential object to use
* @return {CallCredentials} The resulting credentials object
*/
exports.createFromGoogleCredential = function(google_credential) {
return exports.createFromMetadataGenerator(function(auth_context, callback) {
var service_url = auth_context.service_url;
google_credential.getRequestMetadata(service_url, function(err, header) {
Iif (err) {
callback(err);
return;
}
var metadata = new Metadata();
metadata.add('authorization', header.Authorization);
callback(null, metadata);
});
});
};
/**
* Combine a ChannelCredentials with any number of CallCredentials into a single
* ChannelCredentials object.
* @param {ChannelCredentials} channel_credential The ChannelCredentials to
* start with
* @param {...CallCredentials} credentials The CallCredentials to compose
* @return ChannelCredentials A credentials object that combines all of the
* input credentials
*/
exports.combineChannelCredentials = function(channel_credential) {
var current = channel_credential;
for (var i = 1; i < arguments.length; i++) {
current = current.compose(arguments[i]);
}
return current;
};
/**
* Combine any number of CallCredentials into a single CallCredentials object
* @param {...CallCredentials} credentials the CallCredentials to compose
* @return CallCredentials A credentials object that combines all of the input
* credentials
*/
exports.combineCallCredentials = function() {
var current = arguments[0];
for (var i = 1; i < arguments.length; i++) {
current = current.compose(arguments[i]);
}
return current;
};
/**
* Create an insecure credentials object. This is used to create a channel that
* does not use SSL. This cannot be composed with anything.
* @return {ChannelCredentials} The insecure credentials object
*/
exports.createInsecure = ChannelCredentials.createInsecure;
|