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// Copyright 2014 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 (
"net"
"strings"
"testing"
)
func testClientVersion(t *testing.T, config *ClientConfig, expected string) {
clientConn, serverConn := net.Pipe()
defer clientConn.Close()
receivedVersion := make(chan string, 1)
config.HostKeyCallback = InsecureIgnoreHostKey()
go func() {
version, err := readVersion(serverConn)
if err != nil {
receivedVersion <- ""
} else {
receivedVersion <- string(version)
}
serverConn.Close()
}()
NewClientConn(clientConn, "", config)
actual := <-receivedVersion
if actual != expected {
t.Fatalf("got %s; want %s", actual, expected)
}
}
func TestCustomClientVersion(t *testing.T) {
version := "Test-Client-Version-0.0"
testClientVersion(t, &ClientConfig{ClientVersion: version}, version)
}
func TestDefaultClientVersion(t *testing.T) {
testClientVersion(t, &ClientConfig{}, packageVersion)
}
func TestHostKeyCheck(t *testing.T) {
for _, tt := range []struct {
name string
wantError string
key PublicKey
}{
{"no callback", "must specify HostKeyCallback", nil},
{"correct key", "", testSigners["rsa"].PublicKey()},
{"mismatch", "mismatch", testSigners["ecdsa"].PublicKey()},
} {
c1, c2, err := netPipe()
if err != nil {
t.Fatalf("netPipe: %v", err)
}
defer c1.Close()
defer c2.Close()
serverConf := &ServerConfig{
NoClientAuth: true,
}
serverConf.AddHostKey(testSigners["rsa"])
go NewServerConn(c1, serverConf)
clientConf := ClientConfig{
User: "user",
}
if tt.key != nil {
clientConf.HostKeyCallback = FixedHostKey(tt.key)
}
_, _, _, err = NewClientConn(c2, "", &clientConf)
if err != nil {
if tt.wantError == "" || !strings.Contains(err.Error(), tt.wantError) {
t.Errorf("%s: got error %q, missing %q", tt.name, err.Error(), tt.wantError)
}
} else if tt.wantError != "" {
t.Errorf("%s: succeeded, but want error string %q", tt.name, tt.wantError)
}
}
}
func TestBannerCallback(t *testing.T) {
c1, c2, err := netPipe()
if err != nil {
t.Fatalf("netPipe: %v", err)
}
defer c1.Close()
defer c2.Close()
serverConf := &ServerConfig{
PasswordCallback: func(conn ConnMetadata, password []byte) (*Permissions, error) {
return &Permissions{}, nil
},
BannerCallback: func(conn ConnMetadata) string {
return "Hello World"
},
}
serverConf.AddHostKey(testSigners["rsa"])
go NewServerConn(c1, serverConf)
var receivedBanner string
var bannerCount int
clientConf := ClientConfig{
Auth: []AuthMethod{
Password("123"),
},
User: "user",
HostKeyCallback: InsecureIgnoreHostKey(),
BannerCallback: func(message string) error {
bannerCount++
receivedBanner = message
return nil
},
}
_, _, _, err = NewClientConn(c2, "", &clientConf)
if err != nil {
t.Fatal(err)
}
if bannerCount != 1 {
t.Errorf("got %d banners; want 1", bannerCount)
}
expected := "Hello World"
if receivedBanner != expected {
t.Fatalf("got %s; want %s", receivedBanner, expected)
}
}
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