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Copy pathsshstream_test.go
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Copy pathsshstream_test.go
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172 lines (145 loc) · 3.65 KB
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// SPDX-License-Identifier: MIT
// Copyright 2026 Google LLC
package sshstream
import (
"bytes"
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"io"
"net"
"os"
"path/filepath"
"testing"
"golang.org/x/crypto/ssh"
)
func generateTestKeys(t *testing.T, tmpDir string) (string, string) {
t.Helper()
priv, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
t.Fatalf("Failed to generate RSA key: %v", err)
}
privPath := filepath.Join(tmpDir, "id_rsa")
privFile, err := os.Create(privPath)
if err != nil {
t.Fatalf("Failed to create private key file: %v", err)
}
defer privFile.Close()
privPEM := &pem.Block{
Type: "RSA PRIVATE KEY",
Bytes: x509.MarshalPKCS1PrivateKey(priv),
}
if err := pem.Encode(privFile, privPEM); err != nil {
t.Fatalf("Failed to write private key: %v", err)
}
pub, err := ssh.NewPublicKey(&priv.PublicKey)
if err != nil {
t.Fatalf("Failed to create SSH public key: %v", err)
}
pubPath := filepath.Join(tmpDir, "id_rsa.pub")
if err := os.WriteFile(pubPath, ssh.MarshalAuthorizedKey(pub), 0644); err != nil {
t.Fatalf("Failed to write public key file: %v", err)
}
return privPath, pubPath
}
func TestSSHStream(t *testing.T) {
tmpDir := t.TempDir()
privPath, pubPath := generateTestKeys(t, tmpDir)
serverCfg, err := NewServerConfig(pubPath, privPath)
if err != nil {
t.Fatalf("NewServerConfig failed: %v", err)
}
clientCfg, err := NewClientConfig(privPath, ssh.InsecureIgnoreHostKey())
if err != nil {
t.Fatalf("NewClientConfig failed: %v", err)
}
listener, err := net.Listen("tcp", ":0")
if err != nil {
t.Fatalf("Listen failed: %v", err)
}
defer listener.Close()
errChan := make(chan error, 2)
dataChan := make(chan []byte, 1)
// Start server
go func() {
serverConn, err := listener.Accept()
if err != nil {
errChan <- err
return
}
defer serverConn.Close()
stream, err := NewServer(serverConn, serverCfg)
if err != nil {
errChan <- err
return
}
defer stream.Close()
buf := make([]byte, 1024)
n, err := stream.Read(buf)
if err != nil && err != io.EOF {
errChan <- err
return
}
dataChan <- buf[:n]
}()
// Start client
go func() {
clientConn, err := net.Dial("tcp", listener.Addr().String())
if err != nil {
errChan <- err
return
}
defer clientConn.Close()
clientStream, err := NewClient(clientConn, clientCfg)
if err != nil {
errChan <- err
return
}
defer clientStream.Close()
_, err = clientStream.Write([]byte("hello world"))
if err != nil {
errChan <- err
return
}
}()
select {
case err := <-errChan:
t.Fatalf("Error in goroutine: %v", err)
case data := <-dataChan:
// Assumes the server's read grabbed the entire string.
if !bytes.Equal(data, []byte("hello world")) {
t.Errorf("Got %q, want %q", string(data), "hello world")
}
}
}
func TestSSHStreamRejection(t *testing.T) {
tmpDir := t.TempDir()
privPath, pubPath := generateTestKeys(t, tmpDir)
serverCfg, _ := NewServerConfig(pubPath, privPath)
otherDir := t.TempDir()
otherPriv, _ := generateTestKeys(t, otherDir)
clientCfg, _ := NewClientConfig(otherPriv, ssh.InsecureIgnoreHostKey())
listener, err := net.Listen("tcp", ":0")
if err != nil {
t.Fatalf("Listen failed: %v", err)
}
defer listener.Close()
go func() {
serverConn, err := listener.Accept()
if err != nil {
return
}
defer serverConn.Close()
_, _ = NewServer(serverConn, serverCfg)
}()
clientConn, err := net.Dial("tcp", listener.Addr().String())
if err != nil {
t.Fatalf("Dial failed: %v", err)
}
defer clientConn.Close()
_, err = NewClient(clientConn, clientCfg)
if err == nil {
t.Fatal("Client should have failed to connect with unauthorized key")
}
}