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package server
import (
"context"
"fmt"
"os"
"os/exec"
"strconv"
"syscall"
"github.com/spf13/cobra"
"github.com/hetznercloud/cli/internal/cmd/base"
"github.com/hetznercloud/cli/internal/cmd/cmpl"
"github.com/hetznercloud/cli/internal/hcapi2"
"github.com/hetznercloud/cli/internal/state"
)
var SSHCommand = base.Cmd{
BaseCobraCommand: func(client hcapi2.Client) *cobra.Command {
cmd := &cobra.Command{
Use: "ssh [FLAGS] SERVER [COMMAND...]",
Short: "Spawn an SSH connection for the server",
Args: cobra.MinimumNArgs(1),
ValidArgsFunction: cmpl.SuggestArgs(cmpl.SuggestCandidatesF(client.Server().Names)),
TraverseChildren: true,
DisableFlagsInUseLine: true,
}
cmd.Flags().SetInterspersed(false) // To make "hcloud server ssh <server> uname -a" execute "uname -a"
cmd.Flags().Bool("ipv6", false, "Establish SSH connection to IPv6 address")
cmd.Flags().StringP("user", "u", "root", "Username for SSH connection")
cmd.Flags().IntP("port", "p", 22, "Port for SSH connection")
return cmd
},
Run: func(ctx context.Context, client hcapi2.Client, waiter state.ActionWaiter, cmd *cobra.Command, args []string) error {
idOrName := args[0]
server, _, err := client.Server().Get(ctx, idOrName)
if err != nil {
return err
}
if server == nil {
return fmt.Errorf("server not found: %s", idOrName)
}
useIPv6, _ := cmd.Flags().GetBool("ipv6")
user, _ := cmd.Flags().GetString("user")
port, _ := cmd.Flags().GetInt("port")
ipAddress := server.PublicNet.IPv4.IP
if server.PublicNet.IPv4.IsUnspecified() || useIPv6 {
if server.PublicNet.IPv6.IsUnspecified() {
return fmt.Errorf("server %s does not have a assigned primary ipv4 or ipv6", idOrName)
}
ipAddress = server.PublicNet.IPv6.Network.IP
// increment last byte to get the ::1 IP, which is routed
ipAddress[15]++
}
sshArgs := []string{"-l", user, "-p", strconv.Itoa(port), ipAddress.String()}
sshCommand := exec.Command("ssh", append(sshArgs, args[1:]...)...)
sshCommand.Stdin = os.Stdin
sshCommand.Stdout = os.Stdout
sshCommand.Stderr = os.Stderr
if err := sshCommand.Run(); err != nil {
if exitError, ok := err.(*exec.ExitError); ok {
waitStatus := exitError.Sys().(syscall.WaitStatus)
os.Exit(waitStatus.ExitStatus())
} else {
return err
}
}
return nil
},
}
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