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//go:build amd64 || arm64
// +build amd64 arm64
package machine
import (
"fmt"
"net/url"
"github.com/containers/common/pkg/completion"
"github.com/containers/common/pkg/config"
"github.com/containers/podman/v4/cmd/podman/registry"
"github.com/containers/podman/v4/cmd/podman/utils"
"github.com/containers/podman/v4/pkg/machine"
"github.com/spf13/cobra"
)
var (
sshCmd = &cobra.Command{
Use: "ssh [options] [NAME] [COMMAND [ARG ...]]",
Short: "SSH into an existing machine",
Long: "SSH into a managed virtual machine ",
PersistentPreRunE: rootlessOnly,
RunE: ssh,
Example: `podman machine ssh myvm
podman machine ssh myvm echo hello`,
ValidArgsFunction: autocompleteMachineSSH,
}
)
var (
sshOpts machine.SSHOptions
)
func init() {
sshCmd.Flags().SetInterspersed(false)
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: sshCmd,
Parent: machineCmd,
})
flags := sshCmd.Flags()
usernameFlagName := "username"
flags.StringVar(&sshOpts.Username, usernameFlagName, "", "Username to use when ssh-ing into the VM.")
_ = sshCmd.RegisterFlagCompletionFunc(usernameFlagName, completion.AutocompleteNone)
}
func ssh(cmd *cobra.Command, args []string) error {
var (
err error
validVM bool
vm machine.VM
)
// Set the VM to default
vmName := defaultMachineName
provider := GetSystemDefaultProvider()
// If len is greater than 0, it means we may have been
// provided the VM name. If so, we check. The VM name,
// if provided, must be in args[0].
if len(args) > 0 {
validVM, err = provider.IsValidVMName(args[0])
if err != nil {
return err
}
if validVM {
vmName = args[0]
} else {
sshOpts.Args = append(sshOpts.Args, args[0])
}
}
// If len is greater than 1, it means we might have been
// given a vmname and args or just args
if len(args) > 1 {
if validVM {
sshOpts.Args = args[1:]
} else {
sshOpts.Args = args
}
}
vm, err = provider.LoadVMByName(vmName)
if err != nil {
return fmt.Errorf("vm %s not found: %w", vmName, err)
}
if !validVM && sshOpts.Username == "" {
sshOpts.Username, err = remoteConnectionUsername()
if err != nil {
return err
}
}
err = vm.SSH(vmName, sshOpts)
return utils.HandleOSExecError(err)
}
func remoteConnectionUsername() (string, error) {
cfg, err := config.ReadCustomConfig()
if err != nil {
return "", err
}
dest, _, err := cfg.ActiveDestination()
if err != nil {
return "", err
}
uri, err := url.Parse(dest)
if err != nil {
return "", err
}
username := uri.User.String()
return username, nil
}
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