55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
package ssh
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import (
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"fmt"
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"log/slog"
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"os"
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"path/filepath"
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"time"
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"golang.org/x/crypto/ssh"
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"golang.org/x/crypto/ssh/knownhosts"
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)
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type Connection struct {
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Client *ssh.Client
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}
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func NewConnection(user, host string, port int, auth ssh.AuthMethod) (*Connection, error) {
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home, err := os.UserHomeDir()
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if err != nil {
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return nil, fmt.Errorf("failed to get home dir: %w", err)
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}
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knownHostsPath := filepath.Join(home, ".ssh", "known_hosts")
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hkCallback, err := knownhosts.New(knownHostsPath)
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if err != nil {
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slog.Warn("Could not load known_hosts, ensure you connected manually once.", "path", knownHostsPath)
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return nil, fmt.Errorf("known_hosts error: %w", err)
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}
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cfg := &ssh.ClientConfig{
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User: user,
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Auth: []ssh.AuthMethod{auth},
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HostKeyCallback: hkCallback,
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Timeout: 10 * time.Second,
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}
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addr := fmt.Sprintf("%s:%d", host, port)
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slog.Debug("Dialing SSH", "target", addr)
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client, err := ssh.Dial("tcp", addr, cfg)
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if err != nil {
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return nil, fmt.Errorf("ssh dial failed: %w", err)
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}
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slog.Debug("SSH connection established", "target", addr)
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return &Connection{Client: client}, nil
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}
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func (c *Connection) Close() error {
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if c.Client != nil {
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return c.Client.Close()
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}
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return nil
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}
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