87 lines
1.7 KiB
Go
87 lines
1.7 KiB
Go
package main
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import (
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"fmt"
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"os"
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"time"
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"golang.org/x/crypto/ssh"
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)
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type SSHClient struct {
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Config HostConfig
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client *ssh.Client
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}
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func NewSSHClient(config HostConfig) (*SSHClient, error) {
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key, err := os.ReadFile(config.KeyPath)
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if err != nil {
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return nil, fmt.Errorf("unable to read private key: %v", err)
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}
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signer, err := ssh.ParsePrivateKey(key)
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if err != nil {
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return nil, fmt.Errorf("unable to parse private key: %v", err)
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}
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sshConfig := &ssh.ClientConfig{
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User: config.User,
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Auth: []ssh.AuthMethod{
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ssh.PublicKeys(signer),
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},
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HostKeyCallback: ssh.InsecureIgnoreHostKey(),
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Timeout: 10 * time.Second,
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}
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client, err := ssh.Dial("tcp", fmt.Sprintf("%s:22", config.IP), sshConfig)
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if err != nil {
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return nil, fmt.Errorf("failed to dial: %v", err)
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}
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return &SSHClient{
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Config: config,
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client: client,
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}, nil
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}
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func (s *SSHClient) Close() error {
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if s.client != nil {
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return s.client.Close()
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}
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return nil
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}
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func (s *SSHClient) RunCommand(cmd string) (string, error) {
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session, err := s.client.NewSession()
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if err != nil {
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return "", fmt.Errorf("failed to create session: %v", err)
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}
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defer session.Close()
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output, err := session.CombinedOutput(cmd)
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if err != nil {
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return string(output), fmt.Errorf("failed to run command '%s': %v (output: %s)", cmd, err, string(output))
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}
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return string(output), nil
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}
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func (s *SSHClient) RunCommandBackground(cmd string) error {
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session, err := s.client.NewSession()
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if err != nil {
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return fmt.Errorf("failed to create session: %v", err)
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}
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err = session.Start(cmd)
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if err != nil {
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session.Close()
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return fmt.Errorf("failed to start command: %v", err)
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}
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go func() {
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session.Wait()
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session.Close()
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}()
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return nil
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}
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