mirror of
https://github.com/gravitational/teleport.git
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56 lines
1.6 KiB
Go
56 lines
1.6 KiB
Go
/*
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Copyright 2021 Gravitational, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package sshutils
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import (
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"encoding/base64"
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"fmt"
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"testing"
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"github.com/stretchr/testify/require"
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"golang.org/x/crypto/ssh"
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)
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// TestHostKeyCallback verifies that host key callback properly validates
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// host certificates.
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func TestHostKeyCallback(t *testing.T) {
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ca, err := MakeTestSSHCA()
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require.NoError(t, err)
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realCert, err := MakeRealHostCert(ca)
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require.NoError(t, err)
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spoofedCert, err := MakeSpoofedHostCert(ca)
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require.NoError(t, err)
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hostKeyCallback, err := HostKeyCallback([][]byte{
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[]byte(makeKnownHostsLine("127.0.0.1", ca.PublicKey())),
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}, false)
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require.NoError(t, err)
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err = hostKeyCallback("127.0.0.1:3022", nil, realCert.PublicKey())
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require.NoError(t, err, "host key callback rejected valid host certificate")
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err = hostKeyCallback("127.0.0.1:3022", nil, spoofedCert.PublicKey())
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require.Error(t, err, "host key callback accepted spoofed host certificate")
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}
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func makeKnownHostsLine(host string, key ssh.PublicKey) string {
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return fmt.Sprintf("%v %v %v", host, key.Type(),
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base64.StdEncoding.EncodeToString(key.Marshal()))
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}
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