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|
package connection
import (
"errors"
"fmt"
"net/url"
"os"
"regexp"
"github.com/containers/common/pkg/completion"
"github.com/containers/common/pkg/config"
"github.com/containers/common/pkg/ssh"
"github.com/containers/podman/v4/cmd/podman/registry"
"github.com/containers/podman/v4/cmd/podman/system"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var (
addCmd = &cobra.Command{
Use: "add [options] NAME DESTINATION",
Args: cobra.ExactArgs(2),
Short: "Record destination for the Podman service",
Long: `Add destination to podman configuration.
"destination" is one of the form:
[user@]hostname (will default to ssh)
ssh://[user@]hostname[:port][/path] (will obtain socket path from service, if not given.)
tcp://hostname:port (not secured)
unix://path (absolute path required)
`,
RunE: add,
ValidArgsFunction: completion.AutocompleteNone,
Example: `podman system connection add laptop server.fubar.com
podman system connection add --identity ~/.ssh/dev_rsa testing ssh://root@server.fubar.com:2222
podman system connection add --identity ~/.ssh/dev_rsa --port 22 production root@server.fubar.com
podman system connection add debug tcp://localhost:8080
`,
}
cOpts = struct {
Identity string
Port int
UDSPath string
Default bool
}{}
)
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: addCmd,
Parent: system.ConnectionCmd,
})
flags := addCmd.Flags()
portFlagName := "port"
flags.IntVarP(&cOpts.Port, portFlagName, "p", 22, "SSH port number for destination")
_ = addCmd.RegisterFlagCompletionFunc(portFlagName, completion.AutocompleteNone)
identityFlagName := "identity"
flags.StringVar(&cOpts.Identity, identityFlagName, "", "path to SSH identity file")
_ = addCmd.RegisterFlagCompletionFunc(identityFlagName, completion.AutocompleteDefault)
socketPathFlagName := "socket-path"
flags.StringVar(&cOpts.UDSPath, socketPathFlagName, "", "path to podman socket on remote host. (default '/run/podman/podman.sock' or '/run/user/{uid}/podman/podman.sock)")
_ = addCmd.RegisterFlagCompletionFunc(socketPathFlagName, completion.AutocompleteDefault)
flags.BoolVarP(&cOpts.Default, "default", "d", false, "Set connection to be default")
}
func add(cmd *cobra.Command, args []string) error {
// Default to ssh schema if none given
entities := &ssh.ConnectionCreateOptions{
Port: cOpts.Port,
Path: args[1],
Identity: cOpts.Identity,
Name: args[0],
Socket: cOpts.UDSPath,
Default: cOpts.Default,
}
dest := args[1]
if match, err := regexp.Match("^[A-Za-z][A-Za-z0-9+.-]*://", []byte(dest)); err != nil {
return fmt.Errorf("invalid destination: %w", err)
} else if !match {
dest = "ssh://" + dest
}
uri, err := url.Parse(dest)
if err != nil {
return err
}
if cmd.Flags().Changed("socket-path") {
uri.Path = cmd.Flag("socket-path").Value.String()
}
var sshMode ssh.EngineMode
containerConfig := registry.PodmanConfig()
flag := containerConfig.SSHMode
sshMode = ssh.DefineMode(flag)
if sshMode == ssh.InvalidMode {
return fmt.Errorf("invalid ssh mode")
}
switch uri.Scheme {
case "ssh":
return ssh.Create(entities, sshMode)
case "unix":
if cmd.Flags().Changed("identity") {
return errors.New("--identity option not supported for unix scheme")
}
if cmd.Flags().Changed("socket-path") {
uri.Path = cmd.Flag("socket-path").Value.String()
}
info, err := os.Stat(uri.Path)
switch {
case errors.Is(err, os.ErrNotExist):
logrus.Warnf("%q does not exists", uri.Path)
case errors.Is(err, os.ErrPermission):
logrus.Warnf("You do not have permission to read %q", uri.Path)
case err != nil:
return err
case info.Mode()&os.ModeSocket == 0:
return fmt.Errorf("%q exists and is not a unix domain socket", uri.Path)
}
case "tcp":
if cmd.Flags().Changed("socket-path") {
return errors.New("--socket-path option not supported for tcp scheme")
}
if cmd.Flags().Changed("identity") {
return errors.New("--identity option not supported for tcp scheme")
}
if uri.Port() == "" {
return errors.New("tcp scheme requires a port either via --port or in destination URL")
}
default:
logrus.Warnf("%q unknown scheme, no validation provided", uri.Scheme)
}
cfg, err := config.ReadCustomConfig()
if err != nil {
return err
}
if cmd.Flags().Changed("default") {
if cOpts.Default {
cfg.Engine.ActiveService = args[0]
}
}
dst := config.Destination{
URI: uri.String(),
}
if cmd.Flags().Changed("identity") {
dst.Identity = cOpts.Identity
}
if cfg.Engine.ServiceDestinations == nil {
cfg.Engine.ServiceDestinations = map[string]config.Destination{
args[0]: dst,
}
cfg.Engine.ActiveService = args[0]
} else {
cfg.Engine.ServiceDestinations[args[0]] = dst
}
return cfg.Write()
}
|
