aboutsummaryrefslogtreecommitdiff
path: root/vendor/golang.org/x/crypto/ssh/certs_test.go
blob: 0200531f4c7daeb0e233e0292984ef86a8371081 (plain)
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
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package ssh

import (
	"bytes"
	"crypto/rand"
	"reflect"
	"testing"
	"time"
)

// Cert generated by ssh-keygen 6.0p1 Debian-4.
// % ssh-keygen -s ca-key -I test user-key
const exampleSSHCert = `ssh-rsa-cert-v01@openssh.com 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`

func TestParseCert(t *testing.T) {
	authKeyBytes := []byte(exampleSSHCert)

	key, _, _, rest, err := ParseAuthorizedKey(authKeyBytes)
	if err != nil {
		t.Fatalf("ParseAuthorizedKey: %v", err)
	}
	if len(rest) > 0 {
		t.Errorf("rest: got %q, want empty", rest)
	}

	if _, ok := key.(*Certificate); !ok {
		t.Fatalf("got %v (%T), want *Certificate", key, key)
	}

	marshaled := MarshalAuthorizedKey(key)
	// Before comparison, remove the trailing newline that
	// MarshalAuthorizedKey adds.
	marshaled = marshaled[:len(marshaled)-1]
	if !bytes.Equal(authKeyBytes, marshaled) {
		t.Errorf("marshaled certificate does not match original: got %q, want %q", marshaled, authKeyBytes)
	}
}

// Cert generated by ssh-keygen OpenSSH_6.8p1 OS X 10.10.3
// % ssh-keygen -s ca -I testcert -O source-address=192.168.1.0/24 -O force-command=/bin/sleep user.pub
// user.pub key: ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDACh1rt2DXfV3hk6fszSQcQ/rueMId0kVD9U7nl8cfEnFxqOCrNT92g4laQIGl2mn8lsGZfTLg8ksHq3gkvgO3oo/0wHy4v32JeBOHTsN5AL4gfHNEhWeWb50ev47hnTsRIt9P4dxogeUo/hTu7j9+s9lLpEQXCvq6xocXQt0j8MV9qZBBXFLXVT3cWIkSqOdwt/5ZBg+1GSrc7WfCXVWgTk4a20uPMuJPxU4RQwZW6X3+O8Pqo8C3cW0OzZRFP6gUYUKUsTI5WntlS+LAxgw1mZNsozFGdbiOPRnEryE3SRldh9vjDR3tin1fGpA5P7+CEB/bqaXtG3V+F2OkqaMN
// Critical Options:
//         force-command /bin/sleep
//         source-address 192.168.1.0/24
// Extensions:
//         permit-X11-forwarding
//         permit-agent-forwarding
//         permit-port-forwarding
//         permit-pty
//         permit-user-rc
const exampleSSHCertWithOptions = `ssh-rsa-cert-v01@openssh.com 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`

func TestParseCertWithOptions(t *testing.T) {
	opts := map[string]string{
		"source-address": "192.168.1.0/24",
		"force-command":  "/bin/sleep",
	}
	exts := map[string]string{
		"permit-X11-forwarding":   "",
		"permit-agent-forwarding": "",
		"permit-port-forwarding":  "",
		"permit-pty":              "",
		"permit-user-rc":          "",
	}
	authKeyBytes := []byte(exampleSSHCertWithOptions)

	key, _, _, rest, err := ParseAuthorizedKey(authKeyBytes)
	if err != nil {
		t.Fatalf("ParseAuthorizedKey: %v", err)
	}
	if len(rest) > 0 {
		t.Errorf("rest: got %q, want empty", rest)
	}
	cert, ok := key.(*Certificate)
	if !ok {
		t.Fatalf("got %v (%T), want *Certificate", key, key)
	}
	if !reflect.DeepEqual(cert.CriticalOptions, opts) {
		t.Errorf("unexpected critical options - got %v, want %v", cert.CriticalOptions, opts)
	}
	if !reflect.DeepEqual(cert.Extensions, exts) {
		t.Errorf("unexpected Extensions - got %v, want %v", cert.Extensions, exts)
	}
	marshaled := MarshalAuthorizedKey(key)
	// Before comparison, remove the trailing newline that
	// MarshalAuthorizedKey adds.
	marshaled = marshaled[:len(marshaled)-1]
	if !bytes.Equal(authKeyBytes, marshaled) {
		t.Errorf("marshaled certificate does not match original: got %q, want %q", marshaled, authKeyBytes)
	}
}

func TestValidateCert(t *testing.T) {
	key, _, _, _, err := ParseAuthorizedKey([]byte(exampleSSHCert))
	if err != nil {
		t.Fatalf("ParseAuthorizedKey: %v", err)
	}
	validCert, ok := key.(*Certificate)
	if !ok {
		t.Fatalf("got %v (%T), want *Certificate", key, key)
	}
	checker := CertChecker{}
	checker.IsUserAuthority = func(k PublicKey) bool {
		return bytes.Equal(k.Marshal(), validCert.SignatureKey.Marshal())
	}

	if err := checker.CheckCert("user", validCert); err != nil {
		t.Errorf("Unable to validate certificate: %v", err)
	}
	invalidCert := &Certificate{
		Key:          testPublicKeys["rsa"],
		SignatureKey: testPublicKeys["ecdsa"],
		ValidBefore:  CertTimeInfinity,
		Signature:    &Signature{},
	}
	if err := checker.CheckCert("user", invalidCert); err == nil {
		t.Error("Invalid cert signature passed validation")
	}
}

func TestValidateCertTime(t *testing.T) {
	cert := Certificate{
		ValidPrincipals: []string{"user"},
		Key:             testPublicKeys["rsa"],
		ValidAfter:      50,
		ValidBefore:     100,
	}

	cert.SignCert(rand.Reader, testSigners["ecdsa"])

	for ts, ok := range map[int64]bool{
		25:  false,
		50:  true,
		99:  true,
		100: false,
		125: false,
	} {
		checker := CertChecker{
			Clock: func() time.Time { return time.Unix(ts, 0) },
		}
		checker.IsUserAuthority = func(k PublicKey) bool {
			return bytes.Equal(k.Marshal(),
				testPublicKeys["ecdsa"].Marshal())
		}

		if v := checker.CheckCert("user", &cert); (v == nil) != ok {
			t.Errorf("Authenticate(%d): %v", ts, v)
		}
	}
}

// TODO(hanwen): tests for
//
// host keys:
// * fallbacks

func TestHostKeyCert(t *testing.T) {
	cert := &Certificate{
		ValidPrincipals: []string{"hostname", "hostname.domain", "otherhost"},
		Key:             testPublicKeys["rsa"],
		ValidBefore:     CertTimeInfinity,
		CertType:        HostCert,
	}
	cert.SignCert(rand.Reader, testSigners["ecdsa"])

	checker := &CertChecker{
		IsHostAuthority: func(p PublicKey, addr string) bool {
			return addr == "hostname:22" && bytes.Equal(testPublicKeys["ecdsa"].Marshal(), p.Marshal())
		},
	}

	certSigner, err := NewCertSigner(cert, testSigners["rsa"])
	if err != nil {
		t.Errorf("NewCertSigner: %v", err)
	}

	for _, test := range []struct {
		addr    string
		succeed bool
	}{
		{addr: "hostname:22", succeed: true},
		{addr: "otherhost:22", succeed: false}, // The certificate is valid for 'otherhost' as hostname, but we only recognize the authority of the signer for the address 'hostname:22'
		{addr: "lasthost:22", succeed: false},
	} {
		c1, c2, err := netPipe()
		if err != nil {
			t.Fatalf("netPipe: %v", err)
		}
		defer c1.Close()
		defer c2.Close()

		errc := make(chan error)

		go func() {
			conf := ServerConfig{
				NoClientAuth: true,
			}
			conf.AddHostKey(certSigner)
			_, _, _, err := NewServerConn(c1, &conf)
			errc <- err
		}()

		config := &ClientConfig{
			User:            "user",
			HostKeyCallback: checker.CheckHostKey,
		}
		_, _, _, err = NewClientConn(c2, test.addr, config)

		if (err == nil) != test.succeed {
			t.Fatalf("NewClientConn(%q): %v", test.addr, err)
		}

		err = <-errc
		if (err == nil) != test.succeed {
			t.Fatalf("NewServerConn(%q): %v", test.addr, err)
		}
	}
}