/
testsession.go
78 lines (72 loc) 路 1.81 KB
/
testsession.go
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// Package testsession provides utilities to test SSH sessions.
//
// more or less copied from gliderlabs/ssh tests
package testsession
import (
"net"
"testing"
"github.com/gliderlabs/ssh"
gossh "golang.org/x/crypto/ssh"
)
// New starts a local SSH server with the given config and returns a client session.
// It automatically closes everything afterwards.
func New(tb testing.TB, srv *ssh.Server, cfg *gossh.ClientConfig) *gossh.Session {
tb.Helper()
sess, err := NewClientSession(tb, Listen(tb, srv), cfg)
if err != nil {
tb.Fatal(err)
}
return sess
}
// Listen starts a test server.
func Listen(tb testing.TB, srv *ssh.Server) string {
tb.Helper()
l := newLocalListener(tb)
go func() {
if err := srv.Serve(l); err != nil && err != ssh.ErrServerClosed {
tb.Fatalf("failed to serve: %v", err)
}
}()
tb.Cleanup(func() {
_ = srv.Close()
})
return l.Addr().String()
}
func newLocalListener(tb testing.TB) net.Listener {
tb.Helper()
l, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
if l, err = net.Listen("tcp6", "[::1]:0"); err != nil {
tb.Fatalf("failed to listen on a port: %v", err)
}
}
return l
}
// NewClientSession creates a new client session to the given address.
func NewClientSession(tb testing.TB, addr string, config *gossh.ClientConfig) (*gossh.Session, error) {
tb.Helper()
if config == nil {
config = &gossh.ClientConfig{
User: "testuser",
Auth: []gossh.AuthMethod{
gossh.Password("testpass"),
},
}
}
if config.HostKeyCallback == nil {
config.HostKeyCallback = gossh.InsecureIgnoreHostKey() // nolint: gosec
}
client, err := gossh.Dial("tcp", addr, config)
if err != nil {
return nil, err
}
session, err := client.NewSession()
if err != nil {
return nil, err
}
tb.Cleanup(func() {
_ = session.Close()
_ = client.Close()
})
return session, nil
}