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
|
/*
*
* Copyright 2021 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package google
import (
"context"
"net"
"testing"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/internal"
icredentials "google.golang.org/grpc/internal/credentials"
"google.golang.org/grpc/internal/grpctest"
"google.golang.org/grpc/resolver"
)
type s struct {
grpctest.Tester
}
func Test(t *testing.T) {
grpctest.RunSubTests(t, s{})
}
type testCreds struct {
credentials.TransportCredentials
typ string
}
func (c *testCreds) ClientHandshake(ctx context.Context, authority string, rawConn net.Conn) (net.Conn, credentials.AuthInfo, error) {
return nil, &testAuthInfo{typ: c.typ}, nil
}
func (c *testCreds) ServerHandshake(conn net.Conn) (net.Conn, credentials.AuthInfo, error) {
return nil, &testAuthInfo{typ: c.typ}, nil
}
type testAuthInfo struct {
typ string
}
func (t *testAuthInfo) AuthType() string {
return t.typ
}
var (
testTLS = &testCreds{typ: "tls"}
testALTS = &testCreds{typ: "alts"}
)
func overrideNewCredsFuncs() func() {
origNewTLS := newTLS
newTLS = func() credentials.TransportCredentials {
return testTLS
}
origNewALTS := newALTS
newALTS = func() credentials.TransportCredentials {
return testALTS
}
origNewADC := newADC
newADC = func(context.Context) (credentials.PerRPCCredentials, error) {
// We do not use perRPC creds in this test. It is safe to return nil here.
return nil, nil
}
return func() {
newTLS = origNewTLS
newALTS = origNewALTS
newADC = origNewADC
}
}
// TestClientHandshakeBasedOnClusterName that by default (without switching
// modes), ClientHandshake does either tls or alts base on the cluster name in
// attributes.
func (s) TestClientHandshakeBasedOnClusterName(t *testing.T) {
defer overrideNewCredsFuncs()()
for bundleTyp, tc := range map[string]credentials.Bundle{
"defaultCredsWithOptions": NewDefaultCredentialsWithOptions(DefaultCredentialsOptions{}),
"defaultCreds": NewDefaultCredentials(),
"computeCreds": NewComputeEngineCredentials(),
} {
tests := []struct {
name string
ctx context.Context
wantTyp string
}{
{
name: "no cluster name",
ctx: context.Background(),
wantTyp: "tls",
},
{
name: "with non-CFE cluster name",
ctx: icredentials.NewClientHandshakeInfoContext(context.Background(), credentials.ClientHandshakeInfo{
Attributes: internal.SetXDSHandshakeClusterName(resolver.Address{}, "lalala").Attributes,
}),
// non-CFE backends should use alts.
wantTyp: "alts",
},
{
name: "with CFE cluster name",
ctx: icredentials.NewClientHandshakeInfoContext(context.Background(), credentials.ClientHandshakeInfo{
Attributes: internal.SetXDSHandshakeClusterName(resolver.Address{}, "google_cfe_bigtable.googleapis.com").Attributes,
}),
// CFE should use tls.
wantTyp: "tls",
},
{
name: "with xdstp CFE cluster name",
ctx: icredentials.NewClientHandshakeInfoContext(context.Background(), credentials.ClientHandshakeInfo{
Attributes: internal.SetXDSHandshakeClusterName(resolver.Address{}, "xdstp://traffic-director-c2p.xds.googleapis.com/envoy.config.cluster.v3.Cluster/google_cfe_bigtable.googleapis.com").Attributes,
}),
// CFE should use tls.
wantTyp: "tls",
},
{
name: "with xdstp non-CFE cluster name",
ctx: icredentials.NewClientHandshakeInfoContext(context.Background(), credentials.ClientHandshakeInfo{
Attributes: internal.SetXDSHandshakeClusterName(resolver.Address{}, "xdstp://other.com/envoy.config.cluster.v3.Cluster/google_cfe_bigtable.googleapis.com").Attributes,
}),
// non-CFE should use atls.
wantTyp: "alts",
},
}
for _, tt := range tests {
t.Run(bundleTyp+" "+tt.name, func(t *testing.T) {
_, info, err := tc.TransportCredentials().ClientHandshake(tt.ctx, "", nil)
if err != nil {
t.Fatalf("ClientHandshake failed: %v", err)
}
if gotType := info.AuthType(); gotType != tt.wantTyp {
t.Fatalf("unexpected authtype: %v, want: %v", gotType, tt.wantTyp)
}
_, infoServer, err := tc.TransportCredentials().ServerHandshake(nil)
if err != nil {
t.Fatalf("ClientHandshake failed: %v", err)
}
// ServerHandshake should always do TLS.
if gotType := infoServer.AuthType(); gotType != "tls" {
t.Fatalf("unexpected server authtype: %v, want: %v", gotType, "tls")
}
})
}
}
}
|
